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.

Electro-Harmonix

Electro-Harmonix is a New York based company known for pedals and rebranded vacuum tubes

Groove Tubes

T-300B-GOLD-EH Vacuum Tube - 300B, Electro-Harmonix, Gold Pin
Electro-Harmonix 300B power triode tube with gold pins. Made in Russia. Premium version of the 300B EH with gold grid wire for increased bias stability as well as top of the line sonics and performance.
Starting at $106.95
T-2A3-GOLD-EH Vacuum Tube - 2A3, Electro-Harmonix, Gold Pin
Electro-Harmonix 2A3 power triode tube with gold pins. Made in Russia. Gold plated grid.
Starting at $70.50
T-6V6-SDM-MP-GT Vacuum Tube - 6V6-SD-M, Groove Tubes, Matched Pair
The 6V6 is a low-output power tube (12-18 watts) often used in Fender® amplifiers, including the Champ®, Deluxe™, Dual Professional, Vibro-King®, Princeton®, Vibrolux® and others. It has a very warm, round and soft response with rich harmonics, and distorts easily. One of the best choices ever produced for rehearsal and recording amplifiers. Our most premium design, for long life and professional performance. The choice for many pro players who use Groove Tubes in their favorite amps for recording and rehearsal; fully captures the spirit and sound of tube amps from the '50s and '60s to the present.
$55.00
T-KT90-EH Vacuum Tube - KT90, Electro-Harmonix
Electro-Harmonix KT90 power tube. Made in Russia.
Absolutely the best KT90 ever developed. Wafer base height of 0.34”.
Starting at $49.95
T-EL34M-MP-GT Vacuum Tube - EL34, Groove Tubes, Matched Pair
Package of 2
Octal power tube (Max Plate Watts = 25W) The GT EL34 is based on the original Mullard® EL34 of the '60s - the stock tube in all early Marshall® and Hiwatt® amps. Mullard produced it for about 15 years, and this is a faithful reproduction of the classic XF2 dual-getter version. It has a big, fat and well-defined tone and really “wakes up" reissue amps to perform like the originals. As close as you can get to vintage Marshall® power tube heaven.
$47.00
T-EL84-S-MP-GT Vacuum Tube - EL84, Groove Tubes, Matched Pair
Package of 2
Groove Tube's Gold Series EL84. The warmest Groove Tube in this family. It remains very buttery, with relatively high power output and very even response. A great replacement for many modern stock amps, overcoming a variety of design issues and limitations in inexpensive tube amps.
$44.00
T-KT88-EH-X Vacuum Tube - KT88, Electro-Harmonix
Electro-Harmonix KT88 Vacuum Tube High power kinkless-tetrode for use in amplifiers such as the Marshall Major. This tube is a favorite of audiophiles. Can be used in place of 6550 for a more "round" bass signature.
Starting at $41.95
T-6550-EH Vacuum Tube - 6550, Electro-Harmonix
Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. With 42 watts of plate dissipation in tetrode operation and 44 watts in triode, power is improved even over desirable vintage types.
Starting at $41.50
T-6V6-C-MP-GT Vacuum Tube - 6V6 C, Groove Tubes, Matched Pair
Octal power tube (Max Plate Watts = 14W) Classic design and affordable. Warm overdrive and soft distortion character. The 6V6 is a low-output power tube (12 - 18 watts) often used in Fender® amplifiers, including the Champ®, Deluxe™, Dual Professional, Vibro-King®, Princeton®, Vibrolux® and others. It has a very warm, round and soft response with rich harmonics, and distorts easily. One of the best choices ever produced for rehearsal and recording amplifiers.
$40.00
T-12AX7EH-3 Vacuum Tube - 12AX7 / ECC83, Electro-Harmonix, package of 3
Package of 3
This Russian tube is full bodied and bright with a more straightforward presentation. It packs a lot of bite with its higher-than-normal gain. In overdrive, it offers a lot of crunchy fizz.
$39.75
T-6H30PI-GOLD-EH Vacuum Tube - 6H30PI, Electro-Harmonix, Gold Pin
Sovtek 6H30PI dual triode preamp tube with gold pins. Made in Russia. The 6H30 is a medium-mu dual triode with a very high-perveance cathode. The low plate resistance, combined with a superior linearity, and a true 4 watt per plate dissipation, make for a high performance voltage amp or driver.
$35.95
T-7189-TUNG-X Vacuum Tube - 7189, Tung-Sol Reissue
Tung-Sol has reissued the rare 7189, a high fidelity audio specific variation on the EL84 tube. In addition to the increased fidelity, the 7189 features a higher maximum plate voltage rating of 400V. These tubes are great for both guitar and HiFi amplifiers and can be used in any EL84 or 6BQ5 position.
Starting at $30.95
T-7868-EH Vacuum Tube - 7868, Electro-Harmonix
Electro-Harmonix 7868 power pentode tube with “novar” base. Made in Russia.
Starting at $30.75
T-7591A-EH-X Vacuum Tube - 7591A, Electro-Harmonix
7591A Electro-Harmonix Power Tube Beam power tetrode used in vintage Ampeg and Gibson guitar amplifiers. Also, used in tube hi-fi equipment made by Fisher, Scott, and Harmon-Kardon.
Starting at $27.95
T-6AQ8-EH Vacuum Tube - 6AQ8, Electro-Harmonix
Electro-Harmonix 6AQ8 dual triode preamp tube. Made in Russia.
$27.75
T-12DW7-EH Vacuum Tube - 12DW7, Electro-Harmonix
Electro-Harmonix 12DW7 dual triode preamp tube. Made in Russia.
12DW7 combines one triode of 12AX7 and one triode of 12AU7 in a dual triode package. System 1 (pins 6, 7, 8) is the high-mu 12AX7 triode and system 2 (pins 1, 2, 3) is the medium-mu 12AU7 triode.
$25.85
T-6CA7-EH Vacuum Tube - 6CA7, Electro-Harmonix
Electro-Harmonix 6CA7 Vacuum Tube Big bottle beam-tetrode version of EL34. Perfect EL34 replacement for Musicman amplifiers.
Starting at $24.85
T-12AY7-GT Vacuum Tube - 12AY7, Groove Tubes
This tube is closest in specification to a 12AX7 and can be exchanged with a slight drop in gain. Most companies changed over to the 12AX7 as it became more common.
This tube can be tried in later Marshall amplifiers in the first gain position, where the owner of these amps would like to drop the background noise and lower the gain level to plexi or early 70s vintage gain levels with its returned wider frequency response.
$23.95
T-12AT7WC-EH Vacuum Tube - 12AT7WC, Electro-Harmonix
Electro-Harmonix 12AT7WC dual triode preamp tube. Made in Russia. “Xtra Low Microphonic”. Small plate format dual triode, with low microphonics and superior dissipation compared to NOS originals. Ideal for reverb circuits.
$22.50
T-6BM8-EH Vacuum Tube - 6BM8, Electro-Harmonix
Electro-Harmonix 6BM8 triode pentode tube. Made in Russia.
Contains one preamp triode and one power pentode in a 9 pin miniature package.
$21.95
T-6L6-EH Vacuum Tube - 6L6, Electro-Harmonix
Superior power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Excellent tone and performance compared to most other 6L6 or KT66 types.
Starting at $21.75
T-EL34-EH Vacuum Tube - EL34, Electro-Harmonix
Superior "Black base" high-voltage power pentode. Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s. Perfect EL34 for vintage equipment and for improved performance of modern amps. Extremely musical and predictable, with a sound that is rich, smooth, and detailed without being edgy.
Starting at $21.50
T-6973-EH-X Vacuum Tube - 6973, Electro-Harmonix
Electro-Harmonix 6973 Power Tube Beam power amplifier used in vintage Gretsch and Magnatone amplifiers. This is a real 6973, not a rebrand of a "close" tube.
Starting at $21.15
T-12AT7-GT Vacuum Tube - 12AT7, Groove Tubes
9 pin miniature preamp tube (Amplification Factor = 60)
Durable phase splitter or driver tube. Excellent in vibrato or reverb circuits where consistent, high output power is desired.
$19.95
Don't see what you're looking for? Send us your product suggestions!