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.

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-EL84S-STR-TAD-X Vacuum Tube - EL84S-STR Blackplate, TAD, Premium Selected
The Tube Amp Doctor Blackplate series offers the highest tube performance due to the stable heat dissipation of the black anode. This results in an increased tube-life and tones that rival the classic NOS tubes.
Starting at $17.76
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Originally: $19.95
T-6W5-G Vacuum Tube - 6W5-G, Rectifier, Full Wave
New Old Stock 6W5-G. Full-wave high-vacuum rectifier.
$17.76
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Originally: $19.95
T-5Y3GT-RCA Vacuum Tube - RCA 5Y3GT, Rectifier, Full Wave
Also known by US military identifier VT-197A. The 5Y3GT is a filamentary twin-diode designed for full-wave rectifier operation in power supplies that have d-c output current requirements up to approximately 125 milliamperes. RCA brand.
$31.06
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Originally: $34.90
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 $24.88
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Originally: $27.95
T-5Y3GT-TAD Vacuum Tube - 5Y3GT, Tube Amp Doctor, Premium Selected, Rectifier
The Tube Amp Doctor 5Y3GT / 6087 is a small bottle rectifier designed to perform closely to the original rectifier tubes used in many 1950s tweed amplifiers. This rectifier offers high reliability due to its rugged construction and the Tube Amp Doctor Premium Selection process. The TAD 5Y3GT is a great tube for vintage style sag compression.
$13.04
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Originally: $14.65
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 $43.83
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Originally: $49.25
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 $39.12
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Originally: $43.95
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 $25.77
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Originally: $28.95
T-6AG7_6AK7 Vacuum Tube - 6AG7 / 6AK7, Pentode, Power
Metal, power-amplifier pentode primarily designed for use in the output stage of video amplifiers. The tube is capable of operating at high plate current levels and exhibits high transconductance and high power sensitivity.
$7.03
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Originally: $7.90
T-5881-JJ Vacuum Tube - 5881, JJ Electronics
The JJ Electronic 5881 is very similar to the 6L6GC but with a plate dissipation of 23W rather than 30W. Another physical difference is the shorter bulb. These tubes have a soft and balanced response that sounds great in both guitar amps and hifi equipment. The JJ 5881 will work in any amp that uses 6L6 tubes.
Starting at $16.87
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Originally: $18.95
T-AZ41 Vacuum Tube - AZ41, Rectifier, Full Wave
High vacuum full wave rectifying tube.
$6.45
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Originally: $12.90
T-6MJ6 Vacuum Tube - 6MJ6, Beam Power Pentode
Novar type beam power tube used as a horizontal-deflection amplifier in color and black-and-white television receivers.
$88.91
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Originally: $99.90
T-6JT6A Vacuum Tube - 6JT6A, Beam Power Amplifier
Beam power tube for horizontal-deflection-amplifier service in black-and-white TV receivers.
$19.95
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Originally: $39.90
T-2-01C Vacuum Tube - 2-01C, Rectifier
Small, closely spaced, low-capacitance, high-vacuum diode designed for use through ultra-high frequencies. In measurement work, it is well suited to mounting in a probe and will maintain accuracy
$18.45
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Originally: $36.90
T-12JT6A Vacuum Tube - 12JT6A, Beam Power Amplifier
The 12JT6A is the same as the 6JT6A except for heater characteristics and ratings.
$3.95
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Originally: $7.90
T-GZ34-MUL Vacuum Tube - GZ34 / 5AR4, Mullard Reissue
Premium directly heated heavy duty rectifier Diode. Re-issue of the most popular rectifier valve ever built by Mullard. Helps extend the life of the other valves in the amplifier by allowing them to heat up before plate voltage is applied.
  • Low internal voltage drop & controlled heater warm up time
  • Excellent choice for both Hifi and instrument amplification
  • Replacement/upgrade for all 5AR4/GZ34 types
$34.67
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Originally: $38.95
T-6LF6_6MH6 Vacuum Tube - 6LF6 / 6MH6, Beam Power Amplifier
Duodecar type used as a horizontal deflection amplifier in color television receivers.
$41.78
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Originally: $83.55
T-7581-TUNG Vacuum Tube - 7581, Tung-Sol
Russian Tung-Sol 7581 tube. Beam power pentode with octal base. (May be substituted for 6L6GC). Made in Russia.
Starting at $14.91
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Originally: $16.75
Partially Out of Stock
T-6L6WGS-SINO Vacuum Tube - 6L6WGS, Black Plate, Short Bottle, Made in China
6L6WGS - Black Plate, Short Bottle, Made in China
Starting at $15.40
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Originally: $17.30
T-6L6WGC-SINO Vacuum Tube - 6L6WGC, Black Plate, Made in China
6L6WGC - Black Plate, Made in China
Starting at $15.40
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Originally: $17.30
T-0Z4-A Vacuum Tube - 0Z4-A, Rectifier, Full Wave, Gas
The 0Z4A is a gas-filled, double diode employing an ionic-heated cathode. Its principal application is as a full-wave power rectifier in equipment with vibrator type power supplies.
$3.47
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Originally: $3.90
T-10BQ5 Vacuum Tube - 10BQ5, Beam Power Amplifier, output pentode
The 10BQ5 is an output pentode designed for application in medium power hi-fi amplifiers. A pair of tubes in class AB, push-pull conventional operation yields an output of up to 17 watts at 4% distortion (without feedback).
$6.14
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Originally: $6.90
T-117L7GT Vacuum Tube - 117L7GT, half-wave rectifier and beam-power amplifier
Combines a half-wave rectifier and a beam-power amplifier in the same envelope. It is designed for AC-DC service from a 117 volt line in three-way portable receivers.
$8.54
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Originally: $9.60
T-117Z3 Vacuum Tube - 117Z3, Half-wave rectifier, miniature type
Heater, for unipotential cathode. 117 volts AC-DC.
$4.36
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Originally: $4.90
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