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Tung-Sol 6SL7GT - black glass
Tung-Sol 6SL7GT - black glass
Price: $62.00
Tung-Sol 6SL7GT - black glass
This rare 1954 Tung-Sol 6SL7GT has round plates and black glass. The white print on the base has the Tung-Sol logo. Tube tests as new with balanced sections and low noise.
Tung-Sol JAN 6SL7WGT - ribbed gray plates, brown base
Tung-Sol JAN 6SL7WGT - ribbed gray plates, brown base
Price: $49.00
Tung-Sol JAN 6SL7WGT - ribbed gray plates, brown base
This 1961 military spec Tung-Sol 6SL7WGT tube has ribbed gray plates and a halo getter. The brown base has silver print with the Tung-Sol logo and reads "JAN-CTL-6SL7WGT." Tube tests as new with low noise.
Tungsram 12AU7 / ECC82 - gray plates
Tungsram 12AU7 / ECC82 - gray plates, matched pair
Price: $94.00
Tungsram 12AU7 / ECC82 - gray plates, matched pair
The Tungsram 12AU7 / ECC82 tubes in this precisely matched pair have short gray plates with copper grid posts. They were made in Hungary. The yellow print on the glass has the Tungsram logo. Both tubes test as new with very low noise.
GE JG-5814A / 12AU7 - black plates, triple mica, matched pair
GE JG-5814A / 12AU7 - black plates, triple mica, matched pair
Price: $109.00
GE JG-5814A / 12AU7 - black plates, triple mica, matched pair
The 1963 military spec GE 5814A tubes in this precisely matched pair are 12AU7 type tubes. They have black plates, triple micas, and extra support rods. Both tubes test as new with very low noise. They are matched for both current draw (mA) and Gm.
Sylvania 7025 / 12AX7 - long gray plates, phono grade
Sylvania 7025 / 12AX7 - long gray plates, phono grade
Price: $77.00
Sylvania 7025 / 12AX7 - long gray plates, phono grade
This 1960s Sylvania STR 7025 is a low noise 12AX7 tube type. It has long gray plates with copper grid posts and a halo getter. The yellow label has the Sylvania logo and reads "STR-395." Tube tests as new with high gain and phono grade / V1 noise levels.
Sylvania 2A3 triode - matched quad
Sylvania 2A3 triode - matched quad
Price: $449.00
Sylvania 2A3 triode - matched quad
The 1940s Sylvania 2A3 tubes in this precisely matched pair have black plates and bottom getters. The green print on the bases has the early Sylvania leaf logo. Both tubes test as new and are matched for current draw (48.0-50.5 mA) & Gm (4880-5000).
ElectroHarmonix 6H30Pi - gold pins
ElectroHarmonix 6H30Pi - gold pins
Price: $33.00
ElectroHarmonix 6H30Pi - gold pins
The ElectroHarmonix 6H30Pi tube is a super linear, military spec dual triode tube made in Russia. It has the same internal construction as the Sovtek 6H30Pi, except the EH 6H30Pi has gold pins and has been selected for tighter tolerances and lower noise.
Visseaux 6K6GT - matched pair
Visseaux 6K6GT - matched pair
Price: $49.00
Visseaux 6K6GT - matched pair
The 1950s Visseaux 6K6GT tubes in this precisely matched pair have black plates, bottom getters, and engraved bases. The white print on the glass says "Made in France." Both tubes test as new.
RCA 71A triode - globe bottle, matched pair
RCA 71A triode - globe bottle, matched pair
Price: $159.00
RCA 71A triode - globe bottle, matched pair
The RCA 71A tubes in this precisely matched pair have silver plates and globe bottles with lots of chrome flashing. The engraved bases have the RCA Radiotron logo and read "171-A." Both tubes test as new.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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