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Featured items

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GE 6550 / 6550A - welded plates, matched pair
GE 6550 / 6550A - welded plates
Price: $249.00
GE 6550 / 6550A - welded plates
The 1970s GE 6550A power tubes in this precision matched pair have gray plates, 3 getters, metal collar bases, and 188-5 factory code (Owensboro, Ky). Tubes matched for both current draw (52.1 & 54.9 mA) and transconductance (6200 & 6400 Gm).
GE JAN 6080 - black plates
GE JAN 6080 - black plates
Price: $39.00
GE JAN 6080 - black plates
This GE 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has black plates, top getters, and a metal collar base. The green print on the glass reads "GE JAN-6080WC." Tube tests as new with low noise.
Vintage Svetlana
Vintage Svetlana "Winged C" 6AS7G / 6H13C
Price: $49.00
Vintage Svetlana "Winged C" 6AS7G / 6H13C
This vintage Svetlana "Winged C" 6H13C dual triode power tube is a Russian 6AS7G tube type popular in OTL and headphone amplifiers. It has black plates and dual bottom getters with lots of flashing. Tube tests as new with very low noise.
Tung-Sol 6550 - black plates, matched pair
Tung-Sol 6550 - black plates, matched pair
Price: $299.00
Tung-Sol 6550 - black plates, matched pair
The rare 1958-59 Tung-Sol 6550 power tubes in this matched pair have welded black plates with no holes, metal collar bases (some corrosion). One tube has a repaired guide pin. They are matched for both current draw (49.4 & 47.8 mA) and Gm (96% & 93%).
Amperex 6DJ8 / ECC88 - matched pair, phono grade
Amperex 6DJ8 / ECC88 - orange label, phono grade, matched pair
Price: $149.00
Amperex 6DJ8 / ECC88 - orange label, phono grade, matched pair
The 1967 Amperex 6DJ8 / ECC88 tubes in this precisely matched pair were made in Holland (Heerlen factory code) and have halo getters. The orange print has the Amperex globe label. Both tubes test as new and are precisely matched.
Chelmer Valve 6SL7GT / ECC35 - black plates, matched pair
Chelmer Valve 6SL7GT / ECC35 - black plates, matched pair
Price: $169.00
Chelmer Valve 6SL7GT / ECC35  - black plates, matched pair
The early 1950s Chelmer Valve ECC35 / 6SL7GT tubes in this precisely matched pair have round black plates and bottom getters. The white print on the glass has the Chelmer Valve logo. Both tubes test as new with balanced sections and very low noise.
GE 6DJ8 / ECC88 - smoked glass, phono grade
GE 6DJ8 / ECC88 - smoked glass, phono grade
Price: $49.00
GE 6DJ8 / ECC88 - smoked glass, phono grade
This 1968 GE 6DJ8 / ECC88 tube was made in the USA. It has gray plates and a disc getter with smoked glass. The white print on the glass has the GE logo. Tube tests as new with balanced sections and phono grade noise levels.
Mullard 6SN7GTB - matched pair
Mullard 6SN7GTB - matched pair
Price: $149.00
Mullard 6SN7GTB - matched pair
These unusual 1960s Mullard 6SN7GTB tubes have medium bottles with black plates and bottom getters, similar to RCA 6SN7GTB tubes. The white labels on the glass have the IEC International C logo (partial). Both tubes test as new with very low noise.
Mullard EF86 / 6267 - silver plate, 10M label
Mullard EF86 / 6267 - silver plate, 10M label
Price: $89.00
Mullard EF86 / 6267 - silver plate, 10M label
This 1965 Mullard EF86 / 6267 tube has silver plates and a halo getter (8Y1 series). The yellow print on the glass has the broadcast quality Mullard 10M logo and the Blackburn code is etched in the glass. Tube tests as new with low noise.
Philips Miniwatt 12AU7 / ECC82
Philips Miniwatt 12AU7 / ECC82
Price: $69.00
Philips Miniwatt 12AU7 / ECC82
This 1960s Philips Miniwatt 12AU7 / ECC82 tube has gray plates and a halo getter. They white print has the Philips Miniwatt logo and the Heerlen Holland factory code is etched in the glass. Tube tests as new with with balanced sections and very low noise.
RCA 6L6G - gray glass, matched pair
RCA 6L6G - gray glass, matched pair 1
Price: $189.00
RCA 6L6G - gray glass, matched pair 1
The 1953 RCA 6L6GC power tubes in this matched pair have have large "coke bottle" envelopes with gray glass and bottom getters. They are matched for current draw (54.8 & 58.4 mA) transconductance (5000 & 5400 Gm).
RCA 6V6GTA - dual O getters, matched pair
RCA 6V6GTA - dual O getters, matched pair
Price: $109.00
RCA 6V6GTA - dual O getters, matched pair
The late-1960s RCA 6V6GTA tubes in this precisely matched pair have gray plates and dual O getters. The red print on the bases or glass has the RCA logo (may be partial/missing). Both tubes test as new and are matched for both current draw (mA) and Gm.
Siemens 12AX7 / E83CC - matched pair, phono grade
Siemens 12AX7 / E83CC - matched pair, phono grade
Price: $219.00
Siemens 12AX7 / E83CC - matched pair, phono grade
The late 1960s Siemens E83CC tubes in this precisely matched pair are premium quality 12AX7 / ECC83 tubes. They have gray plates and halo getters. Both tubes test as new with phono / V1 grade noise levels.
Sovtek 12AX7WXT+
Sovtek 12AX7WXT+ - triple mica
Price: From $14.00 to $29.00
Sovtek 12AX7WXT+ - triple mica
This Sovtek 12AX7WXT+ tube has gray plates and triple micas. The black print on the glass has the Sovtek logo and says "Made in Russia." Click "more info" for current availability.
Tung-Sol 6SN7GT - gray glass
Tung-Sol 6SN7GT - gray glass
Price: $149.00
Tung-Sol 6SN7GT - gray glass
This rare 1956 Tung-Sol 6SN7GT tube has gray glass with bottom getters. The white print on the base has the Tung-Sol logo. Tube tests as new with balanced sections.
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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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