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Ei KT90 - Type II, precision matched octet
Ei KT90 - Type II, precision matched octet
Price: $944.00
Ei KT90 - Type II, precision matched octet
The early 1990s Type II Ei KT90 power tubes in this precisely matched octet were made in the former Yugoslavia. They have welded gray plates and dual O getters. Tubes test as new and are matched for both current draw (mA) and transconductance (Gm).
GE 6L6GC - premium matched quad
GE 6L6GC - premium matched quad
Price: $252.00
GE 6L6GC - premium matched quad
The GE 6L6GC power tubes in this premium matched quad have gray plates, dual side getters, black bases, and the 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched for both current draw (mA) and transconductance (Gm).
Amperex 12AX7 / ECC83 - matched pair, phono grade
Amperex 12AX7 / ECC83 - matched pair, phono grade
Price: $194.00
Amperex 12AX7 / ECC83 - matched pair, phono grade
The 1970s Amperex 12AX7 / ECC83 tubes in this precisely matched pair have dimpled disc getters (I66 series) and the orange Amperex globe logos. The Heerlen factory codes are etched in the glass. Both tubes test as new with phono grade noise levels.
Brimar 12AT7WA / CV4024 - military spec
Brimar 12AT7WA / CV4024 - military spec
Price: From $39.00 to $44.00
Brimar 12AT7WA / CV4024 - military spec
This 1966 Brimar CV4024 / 12AT7WA tube has black wing style plates with copper posts and a halo getter. The white label has the Brimar logo and BVA military insignia, and says "Made in England." Tests as new with very low noise.
Ei 6DJ8 / ECC88 - A-frame
Ei 6DJ8 / ECC88 - A-frame
Price: From $22.00 to $37.00
Ei 6DJ8 / ECC88 - A-frame
This Ei 6DJ8 / ECC88 tube was made in pre-war Yugoslavia. It has a dimpled disc getter with A-frame support and silver risers. Click "more info" for current availability.
GE 12AY7 - early gray plates, windmill getter
GE 12AY7 - early gray plates, windmill getter
Price: $49.00
GE 12AY7 - early gray plates, windmill getter
This 1950s GE 12AY7 tube has a windmill getter and gray plates shaped like the early Ken-Rad 12AY7s. The tubes in this lot also have a yellow stamp indicating they were selected for Lear Electronics. Tube tests as new with balanced sections.
Genalex EF86 / Z729 - mesh plate
Genalex EF86 / Z729 - mesh plate
Price: $94.00
Genalex EF86 / Z729 - mesh plate
This rare Genalex Z729 tube is an EF86 equivalent that was made in England in the 1950s for Emitron. It has mesh plates and a D getter. The white print on the glass has the Emitron logo with BVA insignia and reads "Made in England." Tube tests as new.
Philips 6V6GT - black glass, Realistic label
Philips 6V6GT - black glass, Holland made
Price: $49.00
Philips 6V6GT - black glass, Holland made
This rare 1960s Philips 6V6GT tube was made in Holland. It has a bottom dish getter and black glass. The yellow label on the glass has the Realistic logo and reads "made in Holland." Tube tests as new.
RCA 12AX7 - long gray plates, premium matched pair
RCA 12AX7 - long gray plates, matched pair
Price: $169.00
RCA 12AX7 - long gray plates, matched pair
The 1960 RCA 12AX7 tubes in this precisely matched pair have long gray plates and windmill getters. Both tubes test as new with balanced sections and phono grade noise levels.
Telefunken 12AX7 / ECC83 - smooth plates, matched pair
Telefunken 12AX7 / ECC83 - smooth plates, Dynaco labels, matched pair
Price: $244.00
Telefunken 12AX7 / ECC83 - smooth plates, Dynaco labels, matched pair
The 1960s Telefunken 12AX7 / ECC83 tubes in this precisely matched pair have smooth plates and the diamond imprint in the base. The white labels have the Dynaco logo. Both tubes test as new with balanced sections and phono grade noise levels.
Westinghouse 12AU7 - black plates, matched pair
Westinghouse 12AU7 / 12AU7A - black plates, matched pair
Price: $84.00
Westinghouse 12AU7 / 12AU7A - black plates, matched pair
The 1960 Westinghouse 12AU7 tubes in this precisely matched pair have long black plates and D getters with copper posts. They have the yellow Conn organ labels. Both tubes test as new with balanced sections. They are matched for current draw (mA) and Gm.
Raytheon 6C10 - triple triode
Raytheon 6C10 - triple triode
Price: $84.00
Raytheon 6C10 - triple triode
This Raytheon 6C10 tube has gray plates and a side getter. The yellow label has the Reliatron logo (partial/missing). If you have a Super Champ or Ampeg R-12-RT, you know how hard it is to find these! Tube tests as new with high gain.
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.

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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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