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Groove TubeBuy Groove Tube musical instruments and sound equipment online at lowest price. Groove Tube Gold Series GT-12AX7-C Preamp Tube and other Groove Tube products for sale.  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-12AX7-C Preamp Tube. The Groove Tubes GT-12AX7-C preamp tube brings back the ever-popular and sorely missed Chinese 12AX7! This Gold Series tube has a warm, fat, old-style tone favored by blues players and the classic rock crowd.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes Low ( 1-3 GT Rating) Duet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes High (8-10 GT Rating) Duet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes High (8-10 GT Rating) Quartet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes High (8-10 GT Rating) Duet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6L6-R Power Tube. ST-6L6-R (B) Silver Series single tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes Hardness 1 Quartet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes Low (1-3 GT Rating) Duet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-EL34-R Power Tube. ST-EL34-R Silver Series single tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-EL84-S Power Tube. The Silver Series ST-EL84-S Power Tube is Groove Tubes' European version with even more response, higher power and warmer tone. Good quality, long lasting type vacuum tube with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Quick, soft overdrive distortion, a great power tube for recording.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes Medium (4-7 GT Rating) Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes High (8-10 GT Rating) Duet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes Low (1-3 GT Rating) Quartet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube High (8-10 GT Rating) Duet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes Low (1-3 GT Rating) Duet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes Low (1-3 GT Rating) Duet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes High (8-10 GT Rating) Quartet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes Medium (4-7 GT Rating) Duet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-12AU7-C Preamp Tube. 12AU7 Silver Series. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6CA4 Rectifier Tube. The Groove Tubes Gold Series GT-6CA4 Rectifier Tube is a common 9-pin rectifier for smaller amps like the Silverstone guitar/amp case combos of the 50's.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-12AT7 Preamp Tube. ST-12AT7. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6V6-R Power Tube. ST-6V6-R Silver Series. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6L6-S Power Tube. The Groove Tubes Silver Series ST-6L6-S Power Tube employs a new design with more power and heavy duty components. Slovakian made, with high power and very aggressive dynamic tone... punchy, but with a sweet tone. High power type with more highs and lows than other 6L6 types.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes High (8-10 GT Rating) Quartet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes High (8-10 GT Rating) Quartet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes Medium (4-7 GT Rating) Duet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-ECC83-S Preamp Tube. The Groove Tubes Gold Series GT-ECC83-S is a classic Euro type preamp tube with medium to high gain and a linear frequency response. Very clear, even vacuum tube tone with good bass character.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6C4 Rectifier Tube. The Groove Tubes GT-6C4 Rectifier Tube is a common 9 -in rectifier for smaller amps like the Silverstone guitar/amp case combos of the 50's.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes Low (1-3 GT Rating) Quartet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-5Y3/GZ30 Rectifier Tube. The Groove Tubes Gold Series GT-5Y3 GZ30 is a rectifier tube common to lower-powered Fender amplifiers such as the Champ, Princeton and Deluxe amps. This Gold Series vacuum tube can be used in many 5AR4 and 5U4 amps for lower levels. This Groove Tubes rectifier may be used in amps such as the Matchless DC-30 series and similar amps when you want more compression, less attack, and to lower the voltages in these amps. The GT-5Y3 rectifier gives a nice feel to these amps with a much slower rise time than the 5AR4 or the 5U4, with a great feel. The Groove Tubes GT-5Y3 rectifier will also let amps such as the Matchless distort at a lower volume to make them suitable for smaller venues and to record sweetly at lower settings.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-5U4/GZ32 Rectifier Tube. The Groove Tubes GT5U4 GZ32 rectifier tube is commonly found in many medium powered amplifiers such as the Fender Blackface amps. The Gold Series GT-5U4 is the factory selected rectifier for the Mesa Dual and Triple rectifier series. Common to medium powered amps like the earlier Fender Super Reverbs and Bandmasters. May be used to replace a 5Y3 for improved dynamics and power. Also some players have replaced their 5AR4 (GZ34) with the 5U4 in their Vox AC30 amps to reduce heat and extend the life of the power tubes. Groove Tubes recommends this procedure as a stability enhancer, if you can live with the slightly lower power.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube SAG-MHG Marshall High Gain Preamp Retube Kit. The Groove Tubes SAG-MHG Marshall High Gain Kit contains 2 SAG ECC83S and 1 AX7-MPI tubes optimized for the preamp stage of Marshall-style amplifiers. Specially selected from premium Groove Tubes preamp tubes that have been tested to meet the GT standard. Special Applications Group (SAG) provides further testing and grading of vacuum tubes for certain performance characteristics.This 3-tube set is optimized for your Marshall, Bogner, Rivera, Mesa or British-type amps which use (or will benefit from) the ECC83 (12AX7) preamp tubes. SAG-MHG includes two high output preamp tubes to be used in the V1 and V2 positions, and one MPI (matched phase inverter) tube for the V3 position. The matched phase inverter may be a 12AX7 or an ECC83, as it will be matched for its response curves with the other two tubes. The phase inverter is not part of the tine generation stage, it is a current driver.The V1 and V2 tubes will increase the front end output structure of amplifiers from about 10% to as much as 25% or more over typical stock tubes.The V3, matched phase inverter tube will assure a balanced output section when used with matched power tubes (highly recommended) which will assure sustain across the entire range of your instrument.The MPI (Matched Phase Inverter) is a SAG selected 12AX7 or ECC83, as this tube is not part of the tone generation stage, but part of the output section and is chosen for its current drive and rise time characteristics.Use this MPI in any application where a phase inverter / driver of the ECC83/12AX7/7025 tube is specified. The phase inverter / driver position of a guitar or bass amp is a current driving position, and not part of the tone generation stage. These tubes are selected for specific characteristics, so may be a 12AX7R, 12AX7C, 12AX7M or another 12AX7 type that has been selected for specific curve traces as the objective. This tube cannot be specified as to type in the kit.These kits also work particularly well in Fender Blackface and Silverface amps where the increased gain and current out of the first gain stage combined with a switch from the 12AT7 in the phase inverter to a 12AX7 will yield a much more aggressive tone. These amps which are normally considered to be on the "clean" side will become more aggressive with this kit.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-12AX7-R Preamp Tube. The Groove Tubes Silver Series ST-12AX7-R Preamp Tube is intended as a replacement for tubes that will receive normal service.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-12AX7-R3 Preamp Tube. ST-12AX7-R3. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6L6-C Power Tube. The Chinese-made Groove Tubes Silver Series ST-6L6-C Power Tube offers you sweeter tone and nice break up. Latest design handles higher plate voltage and output is equal to the Russian tubes. New model, large straight bottle like Sylvania STR tube of the late 70's. High power, crisp tone with solid tight bass, great for Rock or Country, excellent value with more power and less cost than 6L6B (5881) Russian type.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-E34L-S Power Tube. The Groove Tubes Silver Series ST-E34L-S Power Tube is an exclusive GT design with special "heat wings" attached to plate for 15% more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class. The 1st choice of Matchless and many pro players including Billy Gibbons, Joe Perry and Joe Walsh.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6550-C Power Tube. ST-6550-C Silver Series single tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube SAG-FHG Fender High Gain Preamp Retube Kit. The Groove Tubes SAG-FHG Fender High Gain Kit kit includes 2 high gain preamp tubes and one matched 12AT7 phase inverter. All SAG kits are selected on a limited basis. The 2 selected high gain ECC83S tubes are optimized for the preamp stage of Fender amplifiers of all eras which use a 12AX7/7025 first gain stage. Special Applications Group (SAG) provides further testing and grading for certain performance characteristics and these vacuum tubes are specially selected from premium Groove Tubes preamp tubes which have been tested to meet the GT standard.This 3-tube set is optimized for Fender amps which use 12AX7 or 7025 tubes in V1 and V2. SAG-FHG includes two high gain preamp tubes to be used in the V1 and V2 positions, and one MPI (matched phase inverter) 12AT7 tube for the V6 position (in the case of blackface amps. The V1 and V2 tubes will increase the front end gain structure of the amplifier as much as 20% over typical stock tubes. The matched phase inverter tube will assure a balanced output section when used with matched power tubes (highly recommended) which will assure sustain across the entire range of your instrument.The MPI (Matched Phase Inverter) is a SAG Selected 12AT7 as is standard Fender practice.Each of the three kit tubes is marked as to it's specific rating. In the future if you wish to change your gain structure, it is a simple matter to request a higher or lower value as the actual characteristics of your amplifier's gain stage is now known.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube Medium (4-7 GT Rating Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube SAG-FST Fender Soft Touch Preamp Retube Kit. The Groove Tubes SAG-FST Fender Soft Touch Preamp Tube Changing Kit contains 3 Tubes: 2 selected lower gain, slow rise-time 12AX7C tubes optimized for the preamp stage of Fender amplifiers and 1 matched 12AT7 phase inverter.The Groove Tubes SAG-FST (Fender Soft Touch) preamp vacuum tube set is chosen with Blues and Jazz players in mind.Specially selected from premium Groove Tubes preamp tubes which have been tested to meet the GT standard. Special Applications Group (SAG) provides further testing and grading for certain performance characteristics.This 3-tube set is optimized for Fender amps which uss 12AX7 or 7025 tubes in V1 and V2.SAG-FST includes two lower gain preamp tubes to be used in the V1 and V2 positions, and one MPI (matched phase inverter) 12AT7 tube for the V6 position (in the case of blackface amps).The rise time of the V1 and V2 tubes will increase the compression in the amp's front end, while at the same time reducing background noise. A larger percentage of distortion will be generated by the output section rather than the preamp section, resulting in increased clean headroom as another benefit.The matched phase inverter tube will assure a balanced output section when used with matched power tubes (highly recommended) which will assure sustain across the entire range of your instrument.Each of the three kit tubes is marked as to it's specific rating. In the future if you wish to change your gain structure, it is a simple matter to request a higher or lower value as the actual characteristics of your amplifier's gain stage is now known.The MPI (Matched Phase Inverter) is a SAG Selected 12AT7 as is standard Fender practice.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube SAG-AT7-MPI Matched Phase Inverter Retube Kit. The Groove Tubes SAG-AT7-MPI Matched Phase Inverter Tube Changing Kit contains specially selected and matched 12AT7 vacuum tubes for critical audio or guitar/bass amplifier use. Intended when a match of the two sides of the triode are desired for phase inverter or driver use.This 12AT7 tube is a dual triode where the A and B sides are closely matched for use in critical high end audio applications or for use in the phase inverter or driver position of musical instrument amplifiers.The benefit of this Groove Tubes vacuum tube in a guitar or bass amplifier is a matched output section. At lower frequencies such as dropped tunings, 7 string guitars, or bass guitars, the upper and lower portions of the output waveform will be much more equal. When this waveform is not equal, differences are cancelled out in the NFB loop of class A/B amplifiers and are noticed as a lack of sustain or apparent "dead spots" in areas of the fret board.At high levels at all frequencies, sustain will be improved. This is even more critical in Class A amplifiers such as the Vox AC-30 and Matchless amplifiers.Use this MPI in any application where a phase inverter / driver of the ECC81/12AT7 tube is specified. The phase inverter / driver position of a guitar or bass amp is a current driving position, and not part of the tone generation stage. These tubes are selected for specific characteristics, so they may be a 12AT7A, 12AT7C, or other 12AT7 tubes.Use of a 12AT7 in place of a 12AX7 will yield more clean headroom in your output section. The two tube types are interchangable without any adjustment required, so feel free to experiment!. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-12AU7 Preamp Tube. The Groove Tubes GT-12AU7 preamp tube is based on a design from the Ei factory in the former Yugoslavia. The GT-12AU7 is an excellent quality large-plate European-made driver tube, styled after the famous Telefunken line of dual triodes. The usual application for a 12AU7 tube is as the phase inverter that drives the power tubes. These are very well matched, and so are highly recommended for Ampeg SVT's and other amps using this tube as a phase inverter. Also commonly used as phase inverters in McIntosh Hi-Fi amps, some Ampeg amps, and will yield the most clean headroom in many amps. In the latest Fender Pro Series amps such as the Pro Reverb, Concert, and Twin, this tube in V2 (or a 12AY7), will drop the gain of the gain channel where some feel the tone is of a less intense or "buzzy" character. This will then allow a much wider range in the sweep of the volume and gain controls of this channel.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-12AT7 Preamp Tube. The Groove Tubes GT-12AT7 preamp tube is manufactured to the highest quality JAN spec. NOS, made in USA for extremely long life. Used widely in most U.S.-made amps and, in particular, Fender amps. Fender amps with reverb use 2 - 12AT7s - one for the reverb drive stage, and one as a phase inverter to drive the push/pull output stage. The makeup of the 12AT7 is very similar to the 12AX7 and it can be substituted for a 12AX7 in a pinch. Some players prefer the 12AT7 in the driver stage of a Marshall for a cleaner, brighter tone. (The driver or phase inverter is the 12AX7 located nearest the power tubes.) The 12AT7 is rarely used in a tone-generating stage, but rather in function stages, so the Groove Tubes GT-12AT7 is selected for durability.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube Low (1-3 GT Rating) Duet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes Low (1-3 GT Rating) Duet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes High (8-10 GT Rating) Duet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes High (8-10 GT Rating) Duet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes Medium (4-7 Rating) Quartet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-LT88-SV Power Tube. ST-LT88-SV Power Tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-EL84-R Power Tube. ST-EL84-R Silver Series single tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-7027-S Power Tube. The Groove Tubes Silver Series ST-7027-S Power Tube is a rare power pentode used in early Ampeg amps and a good tube in all areas. The only option for an Ampeg VT22 or V4.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-7591-R Power Tube. The Groove Tubes Silver Series ST-7591-R Power Tube is a somewhat obscure pentode tube used in some early Gibson amps that had been off the market. Recently, a Russian factory decided to supply it again. Groove Tubes ST-7591-R tubes are made in very low quantities and are a close copy of the original vacuum tube.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-C Matched Power Tubes High (8-10 GT Rating) Quartet. GT-6550-C Duet A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A. In older Marshall's that have 6550's, this tube will give you more compression and distortion at lower levels than the other 6550 offerings. This tube is terrific in Class A amps such as the GT Solo Single when you want to have a lot of output for smaller live venues. Many people prefer these in some Marshall amps where more clean headroom and output is desired.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube Low (1-3 GT Rating) Quartet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-C2 Matched Power Tubes Low (1-3 GT Rating) Duet. GT-KT88-C2 Duet An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS. The newest version of the classic European power Pentode, made in one of our Chinese affiliate factories.Close attention to the details of processing and finding correct original materials have made this tube close to an original GEC KT88If your looking for a "standard", then this is the tube for you.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-C2 Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-KT88-C2 Duet An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS. The newest version of the classic European power Pentode, made in one of our Chinese affiliate factories.Close attention to the details of processing and finding correct original materials have made this tube close to an original GEC KT88If your looking for a "standard", then this is the tube for you.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes High (8-10 GT Rating) Quartet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-12AX7-R Preamp Tube. The Groove Tubes Gold Series GT-12AX7-R Preamp Tube is an older-style Russian-type vacuum tube with strong tone and a slightly edgy tone. This newer tube from Russia has slightly brighter and lower gain, quicker compression than the GT 12AX7. Great for most Fender amplifiers, especially lower gain Fender-type amps.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6072-M Preamp Tube. This Groove Tubes Gold Series GT-6072-M Preamp Tube specially selected and USA made to JAN spec. 12AY7 type tube with low noise. For use in tube microphones and recording gear.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6201-M Preamp Tube. Groove Tubes Gold Series GT-6201-M Preamp Tubes exhibit low noise, hum and microphonics and are specially selected for use in recording microphones. These tubes are tested and processed from NOS General Electric USA made stocks and are the hand pick of the litter.A very quiet selected version of a 12AT7. These were used for critical applications such as microphones which use the 12AT7, studio gear, and vacuum tube preamplifiers that use a 12AT7 tube.This is a US made NOS JAN spec tube (Joint Army/Navy Spec) made in the late 70's.These GT-6201-M Preamp Tubes feature long lasting, really heavy duty dual triodes, usually used in the driver stage of an amp, aka: Phase inverter, and they take a beating driving the power tube changes.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube Low (1-3 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes High (8-10 GT Rating) Quartet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-C2 Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-KT88-C2 Duet An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS. The newest version of the classic European power Pentode, made in one of our Chinese affiliate factories.Close attention to the details of processing and finding correct original materials have made this tube close to an original GEC KT88If your looking for a "standard", then this is the tube for you.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes Low (1-3 GT Rating) Duet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube High (8-10 GT Rating) Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube High (8-10 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes Low (1-3 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes Low (1-3 GT Rating) Duet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes High (8-10 GT Rating) Quartet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes High (8-10 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes Medium (4-7 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes High (8-10 GT Rating) Quartet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes Low (1-3 GT Rating) Duet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes Medium (4-7 GT Rating) Quartet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes Low (1-3 GT Rating) Duet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes Low (1-3 GT Rating) Quartet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes Low (1-3 GT Rating) Duet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes High (8-10 GT Rating) Duet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes High (8-10 GT Rating) Quartet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-C2 Matched Power Tubes High (8-10 GT Rating) Quartet. GT-KT88-C2 Duet An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS. The newest version of the classic European power Pentode, made in one of our Chinese affiliate factories.Close attention to the details of processing and finding correct original materials have made this tube close to an original GEC KT88If your looking for a "standard", then this is the tube for you.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes High (8-10 GT Rating) Duet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6V6-C Power Tube. ST-6V6-C Silver Series single tube. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-6550-R Power Tube. ST-6550-R Silver Series single tube. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-S Matched Power Tubes Low (1-3 GT Rating) Duet. GT-6V6-S Duet Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-R Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-6L6-R (B) Duet Russian made, same as the 5881, but matched in the GT system. These are a very sturdy and reliable tube, with slightly less power and a more aggressive edge when pushed into distortion.These are the tubes that are used by Fender in amps that use 6L6 tubes and are amps that DO NOT come from their custom shop. These are used in the Hot Rod series, Blues DeVille series, Pro Tube series, BF reissue series.The GT 6L6GE is used in the 57 Tweed, Vibroverb and Vibro King amps.If you are trying to match your stock tube rating with the GT rating:On Fender amps, output tubes in newer amps are color coded. The scale is:Blue = GT 1-3 rating White = GT 4-7 rating Red = GT 8-10 rating. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes Medium (4-7 GT Rating) Quartet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes Low (1-3 GT Rating) Duet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-CHP Matched Power Tubes High (8-10 GT Rating) Quartet. GT exclusive design high performance 6L6 Black Plate with heat sink wings like the GT E34LS and KT88SV. Very strong, smooth, and linear. Fantastic in Fender Hot Rod Deluxe, Deville, etc.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube SAG-AX7-MPI Matched Phase Inverter Retube Kit. The Groove Tubes SAG-AX7-MPI Matched Phase Inverter Tube Changing Kit consists of specially selected and matched 12AX7 vacuum tubes for critical audio or guitar/bass amplifier use. They're intended primarily for matching the two sides of the triode for phase inverter or driver use.The Groove Tubes AX7 tube is a dual triode where the A and B sides are closely matched for use in critical high end audio applications or for use in the phase inverter or driver position of musical instrument amplifiers.The benefit of this tube in a guitar or bass amplifier is a matched output section. At lower frequencies such as dropped tunings, 7 string guitars, or bass guitars, the upper and lower portions of the output waveform will be much more equal. When this waveform is not equal, differences are cancelled out in the NFB loop of class A/B amplifiers and are noticed as a lack of sustain or apparent "dead spots" in areas of the fret board.At high levels at all frequencies, sustain will be improved. This is even more critical in Class A amplifiers such as the Vox AC-30 and Matchless amplifiers.Use this MPI in any application where a phase inverter / driver of the ECC83/12AX7/7025 tube is specified. The phase inverter / driver position of a guitar or bass amp is a current driving position, and not part of the tone generation stage. These tubes are selected for specific characteristics, so may be a 12AX7R, 12AX7C, 12AX7M or another 12AX7 type that has been selected for specific curve traces as the objective. One can not specify the tube type desired. If you want a specific type matched as an MPI you need to order the tube and then add the SAG labor charge on top of the tube. The stocked MPIs are generally made from 12AX7C, 12AX7R (WC and NOT WA) and the new 12AX7M. Any of these tubes may be supplied as they are matched for specs and vacuum tube curve traces and not for tube type.Use of a 12AT7 in place of a 12AX7 will yield more clean headroom in your output section. The two tube types are interchangable without any adjustment required, so feel free to experiment!Please contact GT SAG directly if you have any questions or specific application requirements.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes High (8-10 GT Rating) Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-R Marched Power Tubes Low (1-3 GT Rating) Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too. Classically designed with warm overdrive and soft distortion character.The newest version tooling of these 6V6 tubes are making them a favorite in many 6V6 amps. These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube Medium (4-7 GT Rating) Duet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes High (8-10 GT Rating) Duet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes High (8-10 GT Rating) Duet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-M Matched Power Tubes High (8-10 GT Rating) Quartet. GT-EL-34M XF2 Dual Getter - Matched Duet Reproduction of a classic EL-34 XF2 Pair Getter tube. The GT-EL34M was shown at NAMM. This tube is based upon a tube which is considered something of an icon to EL34 users in both the audio world and guitar amp world. There were a number of variants of the original tube and GT chose the classic XF2 dual getter version to reproduce. This tube is now available in matched quads and duets.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes Medium (4-7Rating) Duet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-S Matched Power Tubes Medium (4-7 GT Rating) Duet. This GT-EL84-S Matched Power Tube Duet and Quartet features a new European version with even more response, higher power, and warmer tone. It's the low-power pentode popularized in the early Vox AC30 amps. It was rediscovered by Matchless and now is used by nearly every tube amp company. It has a quick, soft overdrive distortion-great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes High (8-10 GT Rating) Duet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube High (8-10 GT Rating) Quartet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes High (8-10 GT Rating) Duet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6550-R Matched Power Tube Medium (4-7 GT Rating) Quartet. GT-6550-R Duet Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps. Newest entry, power and quality should mean long life. Excellent response, yet it's easier to push into distortion than "A" version, a little harder sounding than "C".. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes Low (1-3 Rating) Duet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes Low (1-3 GT Rating) Quartet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes Medium (4-7 GT Rating) Duet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-E34L-S Matched Power Tubes Medium (4-7 GT Rating) Quartet. The Gold Series GT-E34L-S Matched Power sets are an exclusive GT design with special "heat wings" attached to the plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.This is a specially modified power pentode with 15% more power and great overall tone. Big heat sinks attached to the plates keep it from sagging at full power so the bass stays tight and the treble crisp.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes High (8-10 GT Rating) Duet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-5AR4/GZ34 Rectifier Tube. The most common rectifier tube used in higher powered amps which use a rectifier such as Fender 40 watt and Vox AC-30 amplifiers. Common to higher powered tube amps, like the later Fender Super Reverb amps and the Vox AC30 (or Matchless copies). May be used to replace a 5U4 or 5Y3 and will give a faster more dynamic tonal result. This rectifier has a rise time from 300-400 volts that is about 1/2 that of a 5U4. They work nicely in amps such as the Mesa Rectifier series which use the 5U4. Great if you want a feel and response that is tighter than stock rectifiers yet you want to retain the feel and compression character of a vacuum rectifier over the solid-state setting. ÿ ÿ. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-SV Matched Power Tubes Medium (4-7 GT Rating) Quartet. GT-KT88-SV Duet The KT88sv Is the newest version, identical to original Golod Lion specs from the 60's. New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone.Big bottom, very dynamic, most powerful in it's class. Great in Ampeg SVT and HiFi amps. Used by many manufactures such as Matchless, McIntosh and Cary Audio.Has a 15% higher output that may run too hot in some applications.Expect a punchy tight tone with excellent bass response... great for country tight licks and big round jazz tones. Popular with heavy metal and speed players looking for a very clean output section where there majority of their distortion comes from their preamp section of their amp, or via pedals or effects.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT88-C2 Matched Power Tubes High (8-10 GT Rating) Duet. GT-KT88-C2 Duet An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS. The newest version of the classic European power Pentode, made in one of our Chinese affiliate factories.Close attention to the details of processing and finding correct original materials have made this tube close to an original GEC KT88If your looking for a "standard", then this is the tube for you.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-S Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-6L6-S Duet These guitar amp tubes are Slovakian made with high power and very aggressive dynamic tone...punchy, but still sweet. New GT design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-ECC83-S Preamp Tube. ST-ECC83-S Silver Series. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6L6-GE Matched Power Tubes Low (1-3 GT Rating) Quartet. These are a Groove Tubes reissue consisting of a majority of USA components made on the original General Electric machines, the original tools, dies, materials, and processing formulas as acquired from the liquidation for the last American tube factory in Owensboro, Kentucky. They provide you stunning clarity and tone reminiscent of the sounds created by a wide range of classic performers, from Carl Perkins to Jimi Hendrix, both of whom mostly recorded through Fender amps at a time when this was the only tube use worth using. So recapture that sound with these vintage re-creations.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes Low (1-3 GT Rating) Quartet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details  Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Silver Series ST-KT66-C Power Tube. ST-KT66-C Silver Series single tube. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube Medium (4-7 GT Rating) Quartet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-KT66-C Matched Power Tubes Medium (4-7 GT Rating) Duet. GT-KT66-C Duet Chinese made copy of the classic KT66. Great sounding - one step down from the KT66HP, but less money too.New and exclusive GT design. An exact copy of legendary Gold Lion "valve" from the Eric Clapton "Blues Breaker" Marshall combo. Big fat bottom, crisp highs, very warm and a springboard response that make playing fun again! Highly recommended for Fender type amps. GT-6V6-C Quartet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 we loved in our old Deluxe Reverbs. Round, warm, fat tone with lower power put great for a soft blues tone or great fat classic rock sound too.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL84-R Matched Power Tubes High (8-10 GT Rating) Duet. GT-EL84-R Duet Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. Most common low power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording but usually too low volume for live gigs.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-EL34-R Matched Power Tubes High (8-10 GT Rating) Quartet. This Russian-made pentode is standard on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.This exclusive Groove Tubes design is a close copy of classic the Mullard type with good power and flat tonal response. Unique sound, slightly edgy distortion when pushed hard. The most reliable of all in this family.. ...details Groove Tube Accessories > Amplifier Parts > Instrument Amp Parts > Tubes > Groove Tube Gold Series GT-6V6-C Matched Power Tube Low (1-3 GT Rating) Duet. GT-6V6-C Duet Classically designed with warm overdrive and soft distortion character. Chinese made copy of the old USA 6V6 used in old Deluxe Reverbs. Round, warm, fat tone with lower power but great for a soft blues tone or great fat classic rock sound too.These tubes perform very well in the Fender Deluxe Reverb Reissue.. ...details  Groove Tube Accessories > Fretted Instrument Accessories and Parts > Bass Pickups and Parts > Nuts and Saddles > Groove Tube Fat Finger Bass Sustain Enhancer Chrome. The Fatfinger is an effective and natural sustain enhancer when clamped to the headstock of your bass guitar. Tune out dead spots found on almost every bass by simply changing the point of contact to the headstock. The Fatfinger installs in seconds and gives instant and amazing results . . . even for the most hardened tonal skeptic!The Science . . . The physics of the Fatfinger Bass Sustain Enhancer are simple: by effectively adding 2 to 3 times more mass to the "weak" end of any stringed instrument, the strings ring out longer, louder, and with more balance. The increased sustain is immediately apparent, but improved balance is the ultimate reward.The Fatfinger's mass lowers the frequency of the harmonic imperfections, or nodes, of any stringed instrument. These dead spots are moved below the audible range, and so are effectively eliminated! It's an incredible "fix" for that Fender Jazz Bass with the "disappearing C note" syndrome!Made of chromeplated bell brass for mucho mass. And that little chrome finger on the headstock of your guitar will make your friends swoon with envy! The Fatfinger can not damage your instrument in any way.. ...details  Groove Tube Pro Audio > Microphones > Condenser Microphones > Groove Tube GT-30 FET Condenser Mic ¹. The Groove Tubes GT-30 is a true condenser mic with warm Class A FET circuitry that operates on standard +48v phantom power. This highly versatile mic comes with a cardioid capsule as standard, but lets you Interchange capsules for multiple patterns (omni and super-cardoid capsules are sold separately). Includes hard mount and a hard mic case.. ...details  Groove Tube Pro Audio > Microphones > Condenser Microphones > Groove Tube VELO8T Tube Ribbon Mic ¹. The Groove Tubes VELO-8T takes the innovative design aspects of the GT VELO-8 ribbon mic, and adds tube electronics for even higher output and sensitivity while still retaining the classic and highly desirable ribbon sound. Like GT's renowned tube condenser mics, the VELO-8T offers a hand-selected low noise USA-made vacuum tube in a special low noise Class A design. With its custom-formed high power Neodymium magnets and Cinemag transformer, the VELO-8T attains higher signal levels (and lower noise) while retaining a velvet-smooth response. Plus, like the VELO-8, the VELO-8T comes with an additional pre-tensioned, field interchangable ribbon assembly that a user can easily replace at his studio should the ribbon ever become torn, or if it "sags" with age. For horns, vocalists, or any other source that will benefit from the sweet sound of a ribbon mic and the character of a tube mic, the GT VELO-8T may be the perfect solution.GT's VELO 8T includes the PSM1 power supply and EC7 multi-pin cable, both a hard mount and a new GT SM4-PF3 shock mount with attached pop filter for ease of setup in any miking application, and a custom designed moisture resistant aluminum storage case.. ...details
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