All Tube Amp
Welcome to my site! We have the All Tube Amp information that you are looking for.

Is there a relatively inexpensive all tube guitar amp that sounds like a Marshall and a Fender?
Yea,
The Crate V series is pretty good. It has similar tones, but often has onboard effects and lower prices to boot. Check them out on their website...but be careful as they now have a sneakingly similar looking series of solid state amps.
Here's a
good example:
http://www.musiciansfriend.com/product/Crate-V32-Palomino-30-Watt-Class-A-Tube-Combo?sku=487828
FEATURED PRODUCTS:
![]() |
![]() FENDER twin amp EARLY 70s VINTAGE ALL TUBE reverb trem US $1,360.00
|
![]() Traynor YCV80 80 watt all tube 2X12 combo guitar amp US $899.00
|
![]() Randall MTS RM50 CP all tube combo amp w 2 modules US $1,399.99
|
| Add Ebay Auctions to your Website |
![]() |
![]() FENDER twin amp EARLY 70s VINTAGE ALL TUBE reverb trem US $1,360.00
|
![]() Traynor YCV80 80 watt all tube 2X12 combo guitar amp US $899.00
|
![]() Randall MTS RM50 CP all tube combo amp w 2 modules US $1,399.99
|
![]() FENDER PRO JUNIOR AMP AMPLIFIER ALL TUBE US $102.50
|
![]() Fender Twin Amp 100 Watt All Tube Guitar Amp US $1,450.00
|
![]() Vintage Ampeg VT 22 2x12 All Original Tube Amplifer Amp US $1,099.95
|
![]() Tron Guitar Amp 5 Watt All NOS Tubes US $800.00
|
![]() Ampeg J 20 Jet Guitar Amp HANDWIRED ALL TUBE J20 J 20 US $158.05
|
![]() VINTAGE FULLERTON REVERB AMP ALL TUBES US $429.00
|
![]() 1996 Marshall JTM60 all tube combos vintage AMP Ad US $9.99
|
![]() Traynor YBA200 2 200W All Tube Bass Amp Amplifier Head US $879.99
|
![]() DYNACO ST 70 TUBE STEREO POWER AMP ALL ORIGINAL W CAGE US $208.00
|
![]() New Jet City Amps JCA100H 100 Watt All Tube Head US $799.99
|
![]() Ampeg R212R Reverberocket Amp All TUBE Amplifier LK US $138.05
|
![]() Fender Blues Junioir All Tube Combo 15W Amp RESEALED US $450.00
|
![]() CRATE VINTAGE CLUB 30 WATT ALL TUBE USA MADE AMP BLACK US $310.00
|
![]() Fender PS160 All Tube PA 6 channel Mixer Power Amp US $.99
|
![]() Crate All Tube Guitar Amp Vintage Club 30 Killer US $300.00
|
![]() 2 Watt Custom Guitar Combo Amp All Tube w Weber Spkr US $75.00
|
![]() Vox AC50CP2 50 watt 2 x 12 All tube Guitar Combo Amp US $999.95
|
![]() Laney AOR 50W Head Mid 80s model All Tube Amp US $500.00
|
![]() Mesa Boogie Subway Rocket all tube combo amp US $550.00
|
![]() New Jet City Amps JCA100H 100 Watt All Tube Head US $799.99
|
![]() Victoria 20112 Tweed Guitar Amp Amplifier ALL TUBE US $1,350.00
|
![]() Orange Tiny Terror All Tube Guitar Amp Head US $509.46
|
![]() Traynor YBA 200 all tube bass amp US $485.00
|
![]() VOX NIGHT TRAIN NT15H 15W ALL TUBE GUITAR AMP HEAD US $499.99
|
![]() NEW Orange Tiny Terror ALL TUBE Combo Amp US $859.99
|
![]() Mesa Boogie MAVERICK 35 Watt Class A All Tube 2x12 Amp US $699.99
|
![]() Vox AC30C2 2x12 All Tube Guitar Amp US $999.00
|
| Add Ebay Auctions to your Website |
Check out these fine shops that offer All Tube Amp products:
|
|
The Tube Amp Book $34.64 Already known as the bible of tubes and tube amps, The Tube Amp Book is now even better! This deluxe revised edition contains 40% new material, with a comprehensive A-Z section covering all the great tube amp manufacturers, with histories, photos and i... |
|
|
All About Vacuum Tube Guitar Amplifiers (Paperback) $22.84 Explores all manufacturers and de-mystifys the inner workings of tube amps. All new material from the amp guru Gerald Weber. Tons of empirical data that de-mystify the inner workings of tube amps to help you get the most from your amps! You will learn ... |
|
|
Tube Guitar Amplifier: Servicing and Overhaul (DVD) $42.67 At nearly four hours, this program answers every question you could possibly have about vintage tube guitar amplifiers, and many you probably never thought of asking. Taught by amp expert Gerald Weber, it covers the basics of amp maintenance, wiring, t... |
|
|
Tube Amp Talk for the Guitarist and Tech $28.55 For this follow-up to his popular A Desktop Reference of Hip Vintage Guitar Amps, Gerald Weber has compiled his articles and "Ask Gerald" columns that have appeared in Vintage Guitar from 1993 to 1996. As a special bonus, Ken Fischer`s "Trainwreck Pa... |
|
|
Plantroncis MX500I Flex Grip Under-the-ear Headset $33.97 Get clear sound with a Plantroncis MX500I Flex Grip under-the-ear headsetOffice electronics is ideal for use with internet phones, cordless, IP and mobile phonesHeadset features Windsmart Voice Tube |
|
|
Tube Guitar Amplifier Essentials $25.25 From the amp guru, and columnist for Vintage Guitar magazine, comes a future classic that features more than 60 easy-reading chapters de-mystifying the complex world of tube amplifiers. Over eight years in the making, it covers the basic knowledge and ... |
|
|
Padded Tubular Guitar Stand with Security Strap $22.99 Tubular guitar stand comes in a sturdy storage boxGuitar accessory features a single guitar rest with protective rubberStand will hold virtually any acoustic or electric guitar or bass with several levels of adjustable height |
|
|
Ultimate Bench Warrior $20.07 Amp guru Lee Jackson covers: tools of the trade; the basics of soldering; different tube types, with specs and histories; electronic symbols; amplifier modifications from gain stages to adding reverbs; schematics of solidstate circuits and power suppli... |
|
|
In Store Used USED FENDER TWIN AMP 100W ALL TUBE COMBO USED FENDER TWIN AMP 100W ALL TUBE COMBO $719.99 In Store Used USED FENDER TWIN AMP 100W ALL TUBE COMBO USED FENDER TWIN AMP 100W ALL TUBE COMBO |
|
|
Fender Twin Amp 100-Watt All-Tube Guitar Amp $1407.99 This latest version of the famous Fender Twin guitar amp is the best of the old and the new offering the responsive clean tone that made Twins popular and a high gain distortion channel for modern flexibility. To add to the Fender Twin Amp's flexibility it also has a switch able power amp so you can go from a knock-down-the-walls 100 watts or cut the power to a more conservative 25 watts. Big gig, small gig, either way it's ready. The Twin Amplifier is loaded with two 12" Fender Special Design Eminence speakers and also includes tube tremolo, tube reverb, footswitchable FX loop, and external speaker jack. |
|
|
Fender Twin Amp 100-Watt All-Tube Guitar Amp 889406271487 $1279.99 This latest version of the famous Fender Twin guitar amp is the best of the old and the new offering the responsive clean tone that made Twins popular and a high gain distortion channel for modern flexibility. To add to the Fender Twin Amp's flexibility it also has a switch able power amp so you can go from a knock-down-the-walls 100 watts or cut the power to a more conservative 25 watts. Big gig, small gig, either way it's ready. The Twin Amplifier is loaded with two 12" Fender Special Design Eminence speakers and also includes tube tremolo, tube reverb, footswitchable FX loop, and external speaker jack. |
|
|
Kustom Tube 12A Practice Amp $119.99 Thanks to the Tube12 amplifier from Kustom, classic tube tone is now totally affordable. Get all that gutsy, extra warm sound, chunky lows, biting highs and unbeatable presence from this 12-watt tube practice amp. The Tube12 is even loaded with a Celestion 8" speaker! |
|
|
Groove Tube 12AX7 Russian Amp Vacuum Tube $19.95 New tube from Russia. Slightly brighter and lower gain, quicker compression than GT 12AX7. Great for most Fenders, may not be well suited for high gain Fender type amps (such as Boogie). The Groove Tubes Warranty Preamp tubes: Warrented to be free of burn out, excessive noise or microphonics for 180 day from date of purchase. Power tubes: Warranted to be free of burn out for 90 days from date of purchase. If one tube fails, the whole set will be replaced to insure proper matching. GT-Solid Rectifiers & Substi-tubes: Warranted for 3 years from date of purchase. The Groove Tubes Process - Step by Step Testing and Selecting Tubes. Groove Tubes literally goes through thousands of tubes, rejecting more tubes than they accept. They put every tube through a rigorous performance test, one at a time, in real amp circuits. The preamp tubes are rejected for adverse microphonics, low output or high noise. Power tubes are more involved, and they go through additional testing. Here's what they're looking for: Grid Leakage. Causes tube to burn out quickly, and worse yet, to short out and wreak lots of havoc. They throw these tubes out. Weak Vacuum. Tube will act deceptively normal, then just burn out on you (usually at the worst time!). These tubes don't make it past the first round. Gain to Distortion Ratio. The center of all Groove Tube magic! This measurement tells us if the tube will distort early or later in its power range. Since the tube distortion is rich in harmonics (That's why we love 'em!), the tonality of each tube will vary according to this ratio. Only Groove Tubes sets have been measured and matched to insure longer sustain, wider frequency response and a more musical amplifier! Rating and Matching Tubes. Groove Tubes translates this gain to distortion ratio into a performance scale that can range up to 100 points, then match up the tubes to within 1 point of each other. To simplify things, they reduce the scale to 1-10 before the tubes leave their shop. All tubes are exactly matched into duets, quartets, sextets and even octets. More than just Great Tone. The Groove Tubes Process produces many welcomed improvements: Dramatically Improved Sustain by eliminating phase cancellation (which occurs when dissimilar tones coming from unmatched tubes are combined and cancel out certain frequencies.) Improved Harmonic Balance- All the notes you play will have the same amplitude. (No more dead spots or dull notes!) Longer Life Span by 1st) eliminating faulty tubes. 2nd) Their balanced sets reduce stress that occurs when a stronger tube is working too hard to make up for its weaker partner, and 3rd) because their sets drive the output transformer evenly it actually runs cooler! Groove Tu |
|
|
PRS Dallas 50W 2x12 Tube Guitar Combo Amp Black with Elegant $3440 An all-tube combo amp reminiscent of the 6L6 classic American reverb amps. |
|
|
PRS Dallas 50W 1x12 Tube Guitar Combo Amp Black with Elegant $3310 An all-tube combo amp reminiscent of the 6L6 classic American reverb amps. |
|
|
Fender Twin Amp 100-Watt All-Tube Guitar Amp Standard $1599.99 100% valve signal path. Tube reverb and tremolo. 100 watts. 2 - 12" Eminence speakers. 2 channels. 4-button footswitch. 1/4-power button. Full-featured effects loop. Comes with cover. |
|
|
Groove Tube 12AT7 Pre-Amp Amplifier Vacuum Tube $16.95 Groove Tube 12AT7 Pre-Amp Amplifier Vacuum Tubes make your tube amp tone shine like it's new again! Electric Guitarists both yesterday and today can be linked by one piece of equipment: The tube amp. With all the strides in transistor amp technology, guitarists still prefer tube amps. Why do tube amp designs sound and feel differently from solid-state? Simply, tubes work differently. Preamp tubes are used in the first, low level stages of tube amps. There are many designs that will interchange and each has its own tone, gain, and response. These may be interchanged without any modification to the circuit... user friendly, so experiment! Groove Tubes are durable and great for most US made amps, especially Fender. Use new tubes to get a cleaner brighter tone from your amp. Note: Preamp tubes should be changed every time power tubes are replaced for best performance! Groove Tube preamp tubes are warranted to be free of burn out, excessive noise or micro-phonics for 180 days from date of purchase. What Is A Tube? A tube is an electronic device consisting of a minimum of four active elements: a heater (filament), a cathode, a grid and a plate. All sealed in a vacuum glass enclosure to prevent parts from burning. Once heated, the cathode begins to emit electrons, which flow from the cathode (which is negatively charged) toward the plate (which is positively charged). The grid's purpose is to control this flow, in effect, acting as a valve. How Do Tubes Work? When the guitar's pickup produces a small voltage (the result of the string vibrating in the pickup's magnetic field), this signal is applied to the grid, which causes a large current flow from the cathode to the plate. Because of this, a correspondingly large voltage now appears at the plate. A portion of the amp's electronic circuitry, the grid bias control, adjusts the proper voltage setting of the grid. When the grid bias is properly set, the tube is balanced to the circuit, and therefore produces a clean, powerful signal. The plate is connected to an output transformer, which matches the impedance to that of the speaker. How Do Tubes Distort? As the signal emitting from the plate approaches its maximum potential, the tube gradually begins to react less and less to the original input signal. This results in a type of compression of the signal, and the signal becomes cut off or clipped . Tube distortion (clipping) occurs gradually, producing low order distortion which compliments the original signal, creating a warm sound. This is also why it's easy to move between clean and distorted tones. Why do Tube Amps all Sound Different? Types and quality of tubes vary, some tubes amplify more than others. The amount of gain a tube produces varies with the each amp's circuit design, so |
|
|
PRS Dallas 50W Tube Guitar Amp Head Black with Elegant $2975 An all-tube amp head reminiscent of the 6L6 classic American reverb amp heads. |
|
|
Ibanez TSA15H Tube Screamer 15W Tube Guitar Amp Head $299.99 Guitarists normally have to depend on a separate effect pedal to get the distinctive, warm overdrive sounds of a tube amp. Not anymore. The Ibanez TSA15H Tube Amp has a genuine Tube Screamer circuit, built right into the front end, for all the warm tube overdrive punch and crunch you'll need. The all-tube amp head features two 12AX7 preamp tubes and two 6V6 power tubes. The result is loud, balanced sound that cuts through the mix with plenty of full, meaty guitar tone. Built with rugged Ibanez craftsmanship, this guitar amp head is sure to last for many years, able to stand up to the toughest conditions of heavy gigging. Includes foot-switchable function, with Tube Screamer Overdrive, Tone, and Level controls. Ibanez TSA112C speaker cabinet and IFS2G footswitch sold separately. |
|
|
Vox Heritage Collection AC30H2L 30W 2x12 Handwired All Tube Guitar Combo Amp Standard $2699 Vox Heritage Collection AC30H2L 30W 2x12 Handwired All Tube Guitar Combo Amp Standard |
|
|
Peavey Butcher 100W Tube Guitar Amp Head Black $1199.99 All-tube, 100-watt amp head that specializes in innovative versatility and timeless, brutal British tone. |
|
|
Backbeat Books The Tube Amp Book (Book/CD) $45 The deluxe revised Tube Amp Book edition contains 40% new material, with a comprehensive A-Z section covering all the great tube amp manufacturers, with histories, photos, and information. Amplifier brands include Ampeg, Dr. Z, Fender, Gibson, Hiwatt, Marshall, Matchless, Mesa/Boogie, Orange, Vox, Watkins and many others. Features a CD-ROM with 800 schematic and layout diagrams, from Ampeg to Western Electric, plus dramatically improved design and page layout. The Tube Amp Book's technical tips, in-depth electronic specs, explanations, 350 schematic diagrams, and full-color plates make it a must-have for tube-tone fanatics. Hardcover with convenient enclosed spiral binding. 416 pages. |
|
|
Peavey Windsor Studio 20W 1x12 All-Tube Combo Amp Black $399.99 The single-channel Windsor Studio amplifier features a footswitchable Boost button that increases the preamp level to allow the flexibility of a dual-channel amp plus control over the dynamic response and rich distortion characteristics of its class-A tube power topology. The Boost function can be used as an overdrive feature for the power section or simply as a volume boost for soloing. This 15-watt amplifier uses two 12AX7 preamp tubes and one EL34 power-amp tube in a single-ended configuration with no negative feedback. The power section is designed to accommodate 6L6GC, 6550, 6CA7, KT88 and KT66 octal power tubes, as well as variations on those types. Peavey's exclusive Power Sponge™ output attenuator incrementally adjusts the power output of the amplifier while maintaining the distortion characteristics of the power amp at any chosen volume level. Also onboard is a transformer-balanced XLR direct output with a unique microphone simulator that allows players to send the amplifier signal to a recording device or front-of-house mix without the use of a microphone. Additional features on this Peavey amp include true spring reverb, preamp volume, master volume, three-band tone equalization, footswitchable effects loop and a single 12" loudspeaker. |
|
|
Groove Tube EL84 Russian Amp Vacuum Tubes $39.95 EL84 Types 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. GT-EL84 Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive. The 'D' in our model number notes denotes matched Duet. The Groove Tubes Process - Step by Step Testing and Selecting Tubes. Groove Tubes literally goes through thousands of tubes, rejecting more tubes than they accept. They put every tube through a rigorous performance test, one at a time, in real amp circuits. The preamp tubes are rejected for adverse microphonics, low output or high noise. Power tubes are more involved, and they go through additional testing. Here's what they're looking for: Grid Leakage. Causes tube to burn out quickly, and worse yet, to short out and wreak lots of havoc. They throw these tubes out. Weak Vacuum. Tube will act deceptively normal, then just burn out on you (usually at the worst time!). These tubes don't make it past the first round. Gain to Distortion Ratio. The center of all Groove Tube magic! This measurement tells us if the tube will distort early or later in its power range. Since the tube distortion is rich in harmonics (That's why we love 'em!), the tonality of each tube will vary according to this ratio. Only Groove Tubes sets have been measured and matched to insure longer sustain, wider frequency response and a more musical amplifier! Rating and Matching Tubes. Groove Tubes translates this gain to distortion ratio into a performance scale that can range up to 100 points, then match up the tubes to within 1 point of each other. To simplify things, they reduce the scale to 1-10 before the tubes leave their shop. All tubes are exactly matched into duets, quartets, sextets and even octets. More than just Great Tone. The Groove Tubes Process produces many welcomed improvements: Dramatically Improved Sustain by eliminating phase cancellation (which occurs when dissimilar tones coming from unmatched tubes are combined and cancel out certain frequencies.) Improved Harmonic Balance- All the notes you play will have the same amplitude. (No more dead spots or dull notes!) Longer Life Span by 1st) eliminating faulty tubes. 2nd) Their balanced sets reduce stress that occurs when a stronger tube is working too hard to make up for its weaker partner, and 3rd) because their sets drive the output transformer evenly it actually runs cooler! Groove Tubes. It all Comes Down to Tone. When you go into a store and buy other tubes, it's a crapshoot. Without The Groove Tube Process, there's absolutely no way of predicting how |
|
|
Groove Tube E34LS Amp Vacuum Tubes $56.95 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. The 1st choice of Matchless and many pro players including Billy Gibbons, Joe Perry and Joe Walsh. The Groove Tubes Process - Step by Step Testing and Selecting Tubes. Groove Tubes literally goes through thousands of tubes, rejecting more tubes than they accept. They put every tube through a rigorous performance test, one at a time, in real amp circuits. The preamp tubes are rejected for adverse microphonics, low output or high noise. Power tubes are more involved, and they go through additional testing. Here's what they're looking for: Grid Leakage. Causes tube to burn out quickly, and worse yet, to short out and wreak lots of havoc. They throw these tubes out. Weak Vacuum. Tube will act deceptively normal, then just burn out on you (usually at the worst time!). These tubes don't make it past the first round. Gain to Distortion Ratio. The center of all Groove Tube magic! This measurement tells us if the tube will distort early or later in its power range. Since the tube distortion is rich in harmonics (That's why we love 'em!), the tonality of each tube will vary according to this ratio. Only Groove Tubes sets have been measured and matched to insure longer sustain, wider frequency response and a more musical amplifier! Rating and Matching Tubes. Groove Tubes translates this gain to distortion ratio into a performance scale that can range up to 100 points, then match up the tubes to within 1 point of each other. To simplify things, they reduce the scale to 1-10 before the tubes leave their shop. All tubes are exactly matched into duets, quartets, sextets and even octets. More than just Great Tone. The Groove Tubes Process produces many welcomed improvements: Dramatically Improved Sustain by eliminating phase cancellation (which occurs when dissimilar tones coming from unmatched tubes are combined and cancel out certain frequencies.) Improved Harmonic Balance- All the notes you play will have the same amplitude. (No more dead spots or dull notes!) Longer Life Span by 1st) eliminating faulty tubes. 2nd) Their balanced sets reduce stress that occurs when a stronger tube is working too hard to make up for its weaker partner, and 3rd) because their sets drive the output transformer evenly it actually runs cooler! Groove Tubes. It all Comes Down to Tone. When you go into a store and buy other tubes, it's a crapshoot. Without The Groove Tube Process, there's absolutely no way of predicting how a tube will sound. When other tube suppliers claim to have 'matched' sets, they're referring to the meaningless measurement of the tube's power. As we learned in the beginning, it's a was |
|
|
Fender Pro Tube Princeton Recording Amp $1400 The Princeton Recording Amp offers all of the great tone and dynamics of the original, plus several modern studio-friendly features. Its all-tube preamp, power amp and reverb circuitry is based on the classic '65 Princeton Reverb, and, with 20W and a 10" Jensen speaker, it provides spanking vintage tone and enough output for small gigs and rehearsals. The trans-impedance power attenuator lets you crank up the amp for full output tube overdrive and set the speaker volume as low as you want (even silent for headphone use)! Other features include 2 classic onboard "stomp box" effects (overdrive and compression), genuine tube-driven Fender spring reverb by Accutronics, headphone output, speaker emulated line output with level control and ground lift, speaker output jack (internal speaker may be disconnected for use with other 8-ohm enclosures, professional FX loop and 4-button footswitch. |
|
|
Backbeat The Tube Amp Book (Book/CD) $45 The deluxe revised Tube Amp Book edition contains 40% new material, with a comprehensive A-Z section covering all the great tube amp manufacturers, with histories, photos, and information. Amplifier brands include Ampeg, Dr. Z, Fender, Gibson, Hiwatt, Marshall, Matchless, Mesa/Boogie, Orange, Vox, Watkins and many others. Features a CD-ROM with 800 schematic and layout diagrams, from Ampeg to Western Electric, plus dramatically improved design and page layout. The Tube Amp Book's technical tips, in-depth electronic specs, explanations, 350 schematic diagrams, and full-color plates make it a must-have for tube-tone fanatics. Hardcover with convenient enclosed spiral binding. 416 pages. |
|
|
Marshall 1959SLP 100W Tube Guitar Amp Head $2349.99 The 100W Marshall Plexi 1959SLP all-tube amp head cranks out fabulous lead distortion and tight crunch exactly like the original '67 to '69 amp that it emulates. Inspired by Pete Townshend's unquenchable thirst for VOLUME, the Marshall Plexi 1959SLP guitar amp delivers 100W of power from 4 EL34s and 3 ECC83 tubes in the preamp—the exact configuration of the original. Marshall also equips the Plexi 1959SLP with a bypass series FX loop, 3-band EQ, and presence control. |
|
|
Groove Tube 6L6B Russian Amp Vacuum Tubes $47.95 6L6 Type Large Fender Amps The Choice of most all medium powered Fender amps, and the many Fender 'wantabe' amps. This specially designed pentode with a beam forming electrode was invented by RCA and has many variations available. It's response is rounder, with a more pronounced midrange character, very chesty and very old time rock 'n' roll. GT-6L6B Perhaps the most reliable of the currently made types, with slightly less power and a more aggressive edge when pushed into distortion. Currently used for the GT Fender amp tubes. GT-6L6C 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. GT-6L6CB 'Coke Bottle' glass. Higher power, great for round vintage tone. Lightweight construction, shorter life expectancy, also means costs 1/3 as much. Favorite with blues players because of its soft touch, easily 'pushed' into distortion. The Groove Tubes Process - Step by Step Testing and Selecting Tubes. Groove Tubes literally goes through thousands of tubes, rejecting more tubes than they accept. They put every tube through a rigorous performance test, one at a time, in real amp circuits. The preamp tubes are rejected for adverse microphonics, low output or high noise. Power tubes are more involved, and they go through additional testing. Here's what they're looking for: Grid Leakage. Causes tube to burn out quickly, and worse yet, to short out and wreak lots of havoc. They throw these tubes out. Weak Vacuum. Tube will act deceptively normal, then just burn out on you (usually at the worst time!). These tubes don't make it past the first round. Gain to Distortion Ratio. The center of all Groove Tube magic! This measurement tells us if the tube will distort early or later in its power range. Since the tube distortion is rich in harmonics (That's why we love 'em!), the tonality of each tube will vary according to this ratio. Only Groove Tubes sets have been measured and matched to insure longer sustain, wider frequency response and a more musical amplifier! Rating and Matching Tubes. Groove Tubes translates this gain to distortion ratio into a performance scale that can range up to 100 points, then match up the tubes to within 1 point of each other. To simplify things, they reduce the scale to 1-10 before the tubes leave their shop. All tubes are exactly matched into duets, quartets, sextets and even octets. More than just Great Tone. The Groove Tubes Process produces many welcomed improvements: Dramatically Improved Sustain by eliminating phase cancellation (which occurs when dissimilar tones coming from unmatched tubes are combined an |
A great place to shop for All Tube Amp products is Amazon.
Richard Fortus demos Spider Valve MkII Pt. 1 | Line 6


US $1,360.00




























