Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.

Tube Amp Doctor (TAD)

TAD is a German company established in 1993 which selects and matches electronic tubes and manufactures musical instrument accessories.

Tung-Sol

Vacuum Tubes

The first electronic amplification of sound was done with Vacuum Tubes. We have pre-amp, power and rectifier vacuum tubes among other types in New Old Stock from the golden era of American & European manufacturing as well as current production tubes from today.
T-6L6G-TUNG Vacuum Tube - 6L6G, Tung-Sol
Tung Sol 6L6G power pentode tube. Made in Russia. Large bottle type for the look and sound of 6L6 tubes used during the golden age of hi-fi in the 1940s and early 1950s. Uprated to 6L6GC specs for improved performance and reliability.
  • Extremely musical and accurate sound stage
  • Extra thick & heavy “Big Bulb” for vintage look and feel
  • 5881 / KT66 equivalent
Starting at $51.00
T-KT88-STR-TAD-X Vacuum Tube - KT88-STR, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor KT88-STR is build just like the original tube with its thick curved glass envelope and metal base. The similarities don’t stop with its attractive appearance. This KT88 offers a lively and dynamic tone that is ideal in both HiFi audio amplifiers and high wattage guitar / bass amps. The sound of the TAD KT88 is pleasantly warm at all frequencies with detailed mids, articulate and nuanced highs, and harmonically rich and natural lows. The linear response is excellent. The TAD KT88-STR is matched for both plate current and transconductance and passes all of the tests of the TAD Premium Selection process.
Starting at $49.25
T-KT120-TUNG Vacuum Tube - KT120, Tung-Sol Reissue
Super-premium Octal Beam Tetrode, impervious to overload when used at parameters found in existing 6550/KT88/KT90 circuits. Plate dissipation of 60 watts and higher current handling capacity has allowed the design of new amplifiers which are unique, extremely powerful and stable.
Starting at $47.95
T-6550A-STR-TAD-X Vacuum Tube - 6550A-STR, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor 6550A-STR is built and performs to the same standards as the highly sought after GE 6550A. TAD has meticulously designed the plate material to be as strong and pure as possible resulting in an exceptionally stable, consistent, and reliable 6550. The TAD 6550A features a thick straight glass envelope, a metal base, and an authentic triple getter. The frequency response of this tube is remarkably balanced and smooth. Transparent natural lows and thick rich mids with silky highs make this an excellent tube for HiFi equipment as well as classic bass guitar amplifiers. The Tube Amp Doctor 6550A-STR offers outstanding performance in all applications. This tube is matched for both plate current and transconductance. The TAD 6550A-STR also passes all of the tests required in the Premium Selection process.
Starting at $43.95
T-6SL7GT-TUNG Vacuum Tube - 6SL7, Tung-Sol Reissue
Tung Sol 6SL7 dual triode preamp tube. Made in Russia. The best current production 6SL7 available. NOS performance and sound at a fraction of the price. Sweeten up the preamp section of that Vintage Ampeg B-15.
$39.50
T-KT66-TUNG-X Vacuum Tube - KT66, Tung-Sol Reissue
Premium power beam tetrode, a reissue of the famous “Bluesbreaker” tube. Full tone with plenty of chime and powerful bass.
  • High quality & cost-effective
  • Originally a British equivalent to 6L6 and a mainstay of the British hi-fi industry
  • Used in '50s - '60s hi-fi favorites such as the Heath W-5M and many Leak amplifiers
Starting at $35.95
T-6550-TUNG Vacuum Tube - 6550, Tung-Sol Reissue
Copy of the original type 3 Tung-Sol 6550 made in the 1960s. Triple getter, carbonized screen, and gold plated grid. The current production benchmark of the classic 6550.
Made in Saratov, Russia
Starting at $34.95
T-7025-S-TAD Vacuum Tube - 7025 S, Tube Amp Doctor, Premium Selected
The vintage made in England Mullard ECC83 has been accurately recreated in the Tube Amp Doctor 7025 S. This highly sought after tube is regarded by many as the best dual triode to have ever been created for audio use. TAD offers a reliable and affordable way to experience the sound of this legendary tube.
The 7025 S is notable for its rich and complex harmonics. The warmth in the midrange of this tube stands out among similar preamp tubes. The TAD 7025 has nice round clean tones as well as a creamy yet articulate overdrive. Its rugged mechanical construction with extra thick mica spacers along with TAD’s premium selection process ensures a highly reliable preamp tube. Tube Amp Doctor especially recommends the 7025 S for use in British and British style amplifiers.
The Tube Amp Doctor 7025 works in any 7025, 12AX7, or ECC83 position.
$32.95
T-7591A-TUNG Vacuum Tube - 7591A, Tung-Sol Reissue
Tung Sol 7591A beam-power tube. Made in Russia.
Starting at $31.95
T-7581A-TUNG Vacuum Tube - 7581A, Tung-Sol Reissue
Rated for more power than the standard 7581 (35W plate dissipation vs 30W plate dissipation).
Starting at $28.95
T-KT66-TAD-X Vacuum Tube - KT66, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor KT-66 is an incredible remake of the classic British tube. With its large glass envelope contoured by smooth curves tapering into a rounded brown base, the TAD KT-66 not only looks like the original, it performs like the original. This KT66 offers plenty of headroom for a thick full bodied sound with smooth yet articulate highs. The KT-66 is famously used in vintage British plexi amps and makes a great replacement for that style of amplifier and many others. The TAD KT66 is matched for both plate current and transconductance and passes all of the tests of the TAD Premium Selection process. The TAD KT-66 can be used in any KT-66 position as well as 6L6GC and 5881 amps that can supply the required 1.27A for the heater.
Starting at $27.95
T-6EU7-TUNG Vacuum Tube - 6EU7, Tung-Sol Reissue
Russian Tung-Sol 6EU7 tube. High-Mu twin triode with 9 pin miniature base. Made in Russia.
$26.50
T-6L6GC-TAD-X Vacuum Tube - 6L6GC, Tube Amp Doctor
Octal power tube (Max Plate Watts = 30W) TAD 6L6GC-STR RCA-Style black-plate. TAD has the remakes of the all time favorite 6L6 classics by RCA and GE. The TAD 6L6GC-STR is your perfect choice if you are up for the sound of the rock legends.
Starting at $25.65
T-5751-TUNG Vacuum Tube - 5751, Tung-Sol Reissue
Tung Sol 5751 dual triode preamp tube. Made in Russia. NOS specs call the 5751 a “special 12AX7” having a high-mu amplification factor of 70.
$24.95
T-12AY7-HG-TAD Vacuum Tube - 12AY7, Tube Amp Doctor, Highgrade
High grade tube. Tweed Up Your Amp! Vintage tone for original vintage Fender tweed amps. The original tube for all those Fender® tweed amps from the 50s. Brings back the original sound to your tweed amp.
$24.95
T-6SL7GT-TAD Vacuum Tube - 6SL7GT, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor 6SL7GT meets all of the reliability and quality requirements of a TAD Premium Selected tube including low noise and gain balanced triodes. This 6SL7 has a great lively tone with smooth and clear highs and a sonically rich mid range. The TAD 6SL7GT can also be used as an upgrade for Russian 6N9 and 6N9P tubes.
$24.95
T-EL34B-TUNG Vacuum Tube - EL34B, Tung-Sol Reissue
Premium high-voltage power pentode, featuring improved materials and workmanship over the original EL34B. Higher impedance design with increased touch responsiveness.
  • Unique clipping characteristic with a hint of 6L6 sound
  • Velvety-smooth in HiFi applications, full & rich-sounding in guitar amps
  • 6CA7 equivalent
Starting at $24.70
T-6L6WGC-TAD-X Vacuum Tube - 6L6WGC, Tube Amp Doctor
The Classic Sound of the 1950s and 60s - Excellent Tone, Maximum Lifetime! The perfect choice for vintage tweed and blackface amps such as the 1960 Bassman, Twin, Showman or Super Reverb. The complex midrange and sweet heights are a class of its own. The TAD 6L6WGC-STR is our recommendation for classic tone with warm cleans and rich, sweet mids when pushed. Great for fat jazz or blues tones.
Starting at $24.50
T-6SN7GTB-TUNG Vacuum Tube - 6SN7GTB, Tung Sol Reissue
Tung Sol 6SN7GTB dual triode preamp tube. Made in Russia. Super linearity, low noise, and full performance ratings make this one of the best 6SN7 tubes ever made. The sound signature is on par with 5692 types. Excellent driver tube in high-end audio applications.
$23.95
T-6L6GC-STR-T Vacuum Tube - 6L6GC STR, Tung-Sol Reissue
Tung Sol 6L6GC “STR” beam-power tetrode tube. Made in Russia. The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as the benchmark of quality. Built to the same “Special Tube Request” specs of leading amplifier manufacturers of the 1960s, the 6L6GC STR is a rugged and reliable power tube for use in the most demanding guitar amplifier circuits.
Starting at $23.50
T-EL34B-TAD-X Vacuum Tube - EL34B, Tube Amp Doctor
Octal power tube (Max Plate Watts = 25W) Sensational new high-gain EL34 tube with a very dynamic tone. An authentic remake of the British Mullard EL34. The clear and harmonic open top end allows for great clean tone and at the same time the TAD EL34B-STR offers incredibly powerful mids and equally powerful bass.
Starting at $23.45
T-EF86-TAD Vacuum Tube - EF86 / 6267, Tube Amp Doctor, Premium Selected
The Tube Amp Doctor EF86 / 6267 is a low noise and low microphonic version of the vintage pentode. These tubes were famously used in classic HiFi equipment and microphone preamps. The original Vox® AC15 circuit also used an EF86 and now, thanks to its recent availability, there are plenty of options for guitar amplifiers utilizing this unique tube. The TAD EF86 / 6267 meets all of the standards of the Tube Amp Doctor Premium Selection process. This tube has a rugged construction featuring an aesthetically pleasing perforated shield. The TAD EF86 / 6267 will work in and EF86 or 6267 position.
$22.95
T-6V6GT-TUNG Vacuum Tube - 6V6GT, Tung-Sol Reissue
Totally Tweed! The preferred OEM tube of '50s-era Fender Tweed Champ and Deluxe amplifiers The Tungsol 6V6 has a geometry designed to safely handle the higher voltages used in guitar amps " plus heavier plate and grid materials. The result.. better mids and bottom while keeping the smooth top of the classic 6V6's. The Tungsol 6V6 breaks up evenly from low E to high up the neck. Blues players will LOVE these tubes for the way they sing!
Starting at $21.95
T-5881-TUNG Vacuum Tube - 5881, Tung-Sol Reissue
Russian made reissue of the original Tungsol.
The 5881 is the electrical equivalent to types 6L6 and 6L6G except that the plate and screen dissipation ratings have been increased approximately 20 percent. It embodies a complete mechanical redesign which results in greater resistance to shock and vibration.
Starting at $20.95
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