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Featured items

Genalex Gold Lion KT66 reissue - premium matched
Genalex Gold Lion KT66 reissue - precision matched
Price: $52.00
Sale Price: $41.60
Genalex Gold Lion KT66 reissue - precision matched
These new production Genalex Gold Lion KT66 power tubes can be run in any amp that uses 6L6 or 5881 type tubes. They are a faithful reproduction of the tubes used in Clapton's Bluesbreaker amp and popular Heathkit and Leak hi-fi amps from the 1960s.
on sale
Sylvania 6550 - welded plates
Sylvania 6550 - matched pair
Price: $214.00
Sylvania 6550 - matched pair
The 1970s Sylvania 6550 power tubes in this matched pair have welded gray plates, 3 getters, and metal collar bases. The blue or green print on the glass has the PhilipsECG. Click "more info" for test restuls.
GE 5-star 5687 - black plates, halo getter
GE 5-star 5687 - black plates, halo getter
Price: $32.00
GE 5-star 5687 - black plates, halo getter
This 1960s GE 5687WB is a military spec 5687 tube. It has black plates with copper grid posts and a halo getter. The white print has the GE logo with the broadcast quality 5-star label. Tube tests as new with balanced sections and low noise
Cunningham 5Y3GT - black plates
Cunningham 5Y3GT - black plates
Price: $44.00
Cunningham 5Y3GT - black plates
This rare 1950 Cunningham 5Y3GT rectifier tube has smooth black plates and bottom D getters. The silver print on the glass has the Cunningham logo. Tube tests as new.
Mullard EF86 / 6267 - mesh plate, early D getter
Mullard EF86 / 6267 - mesh plate, early D getter
Price: $89.00
Mullard EF86 / 6267 - mesh plate, early D getter
This rare 1955 Mullard EF86 / 6267 tube has mesh plates and a D getter. The white label has the Mullard shield logo and "Made in Gt. Britain" is printed along the bottom. The Blackburn, UK factory code is etched in the glass. Tube tests as new.
RCA 6FQ7 / 6CG7 - side getter, matched quad
Price: $224.00
RCA 6FQ7 / 6CG7 - side getter, matched quad
The 1971 RCA 6FQ7 / 6CG7 tubes in this precisely matched quad have gray plates, side getters, and clear tops. The red print on the glass has the RCA logo (may be partial). Both tubes test as new with balanced sections.
RCA 6L6GC - matched pair
RCA 6L6GC - matched pair
Price: $197.00
RCA 6L6GC - matched pair
The 1960s RCA 6L6GC power tubes in this precisely matched pair have black plates and side O getters. The red print on the bases has the RCA logo. Both tubes test as new. They are matched for both current draw (58.2 & 60.2 mA) Gm (96% & 100%).
RCA 6V6GT - gray glass, matched pair
RCA 6V6GT - gray glass, matched pair
Price: $114.00
RCA 6V6GT - gray glass, matched pair
The 1954 RCA 6V6GT tubes in this precisely matched pair have gray glass and bottom D getters. Their black bases have silver print with the RCA logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
RCA 6V6GTA - clear glass, matched quad
RCA 6V6GTA - clear glass, matched quad
Price: $197.00
RCA 6V6GTA - clear glass, matched quad
The 1960s RCA 6V6GTA tubes in this precisely matched quad have gray plates, bottom D getters, and clear glass. The red print on the bases has the RCA logo. All four tubes test as new for both current draw (mA) and transconductance (Gm).
Westinghouse 7591A - matched quad
Westinghouse 7591 - matched quad
Price: $319.00
Westinghouse 7591 - matched quad
The 1966 Westinhouse 7591 tubes in this precisely matched quad have gray plates and halo and side getters. The yellow print on the base has the Westinghouse logo. All 4 tubes test as new and are matched for both current draw (mA) and Gm.
GE 5751 / 12AX7 - black plates, triple mica
GE 5751 / 12AX7 - black plates, triple mica
Price: $69.00
GE 5751 / 12AX7 - black plates, triple mica
This 1953 military spec GE 5751 tube is a lower gain 12AX7 equivalent. It has black plates, triple micas, and a windmill getter. The white print on the glass has the GE logo and reads "JG-5751." Tube tests as new with balanced sections.
Amperex PQ 6085 - gold pins, matched pair
Amperex PQ 6085 / E80CC - gold pins, matched pair
Price: $149.00
Amperex PQ 6085 / E80CC - gold pins, matched pair
The 1976 Amperex 6085 tubes in this precisely matched pair have gray plates with copper grid posts and gold pins. They have orange PQ labels and the Heerlen, Holland factory codes are etched in the glass. Both tubes test as new and are precisely matched.
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.

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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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