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What’s new
  • BACK IN STOCK
    James Audio output transformers are an excellent choice for DIY single-ended tube amplifier projects
  • NOW AVAILABLE
    The new old stock St. Petersburg 6550B power tube is the predecessor to the new production SED "Winged C" 6550C tube. Same great quality at a great value!

Featured items

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).
Genalex Gold Lion KT77 reissue - premium matched
Genalex Gold Lion KT77 reissue - precision matched
Price: $46.00
Genalex Gold Lion KT77 reissue - precision matched
These new production Genalex Gold Lion KT77 power tubes can directly substitute for 6CA7 or EL34 type tubes. Price includes extended burn-in and precision matching.
Teflon capacitor
Teflon capacitor - 10uf +/-10% at 310VDC
Price: $120.00
Teflon capacitor - 10uf +/-10% at 310VDC
These top of the line RTI Electronics Teflon capacitors measure 10uf +/-10% at 310VDC. This is a one time opportunity to purchase the very best teflon capacitors of this value and rating for tube audio use. While supplies last.
Thomas-CSF 6080WA - black plates
Thomas-CSF 6080WA - black plates
Price: $37.00
Thomas-CSF 6080WA - black plates
This military spec 6080WA dual triode power tube was made in France. It has black plates, top O getters, and a metal collar base. The silver print on the glass has the Thomas-CSF logo and reads "6080WA Made in France." Tube tests as new with low noise.
Western Electric 205D
Western Electric 205D
Price: $897.00
Western Electric 205D
This very rare Western Electric 205A tube was made in the 1920s. It has the "tennis ball" shaped glass with flashing around the top exhaust tip. The engraved black base has the Western Electric logo. Tube tests as new.
James Transformers JS-6112HS - factory matched pairs
James Audio JS-6112HS Output Transformers - factory matched pair
Price: $149.00
James Audio JS-6112HS Output Transformers - factory matched pair
This factory matched pair of 70mA, 10W James Audio JS-6112HS power output transformers is recommended for single-ended tube amplifiers that use 2A3, 45, 71-A, 6V6, and 6BQ5 tube types.
Amperex 12AT7 / ECC81 - gray plates
Amperex 12AT7 / ECC81 - gray plates
Price: $57.00
Amperex 12AT7 / ECC81 - gray plates
This 1962-63 Amperex ECC81 / 12AT7 tube has wing style gray plates and a halo getter (Tk2 series). The white print on the glass is labeled for Conn organs and the Radiotechnique France factory code is etched in the glass. Tube tests as new with low noise.
Amperex GZ34 / 5AR4 - Bugle Boy label, matched pair
Amperex GZ34 / 5AR4 - Bugle Boy label, matched pair
Price: $424.00
Amperex GZ34 / 5AR4 - Bugle Boy label, matched pair
The rare 1959 "fat base" Mullard GZ34 / 5AR4 tubes in this precisely matched pair were made in Great Britain (f31 series). The labels are missing on both tubes, and the Blackburn factory code etching is visible on one tube. Both tubes test as new.
Arcturus 5Y3GT - smooth black plates
Arcturus 5Y3GT - black plates
Price: $29.00
Arcturus 5Y3GT - black plates
This 1959 Arcturus 5Y3GT rectifier tube has smooth black plates and a bottom D getter. The white print on the base has the distinctive Arcturus logo (see photo). Tube tests as new with balanced diode sections.
GE 6FQ7 / 6CG7 - Amperex label, matched pair
GE 6FQ7 / 6CG7 - Amperex label, matched pair
Price: $62.00
GE 6FQ7 / 6CG7 - Amperex label, matched pair
The 1970s GE 6FQ7 / 6CG7 tubes in this precisely matched pair have halo getters and gray plates with copper grid posts. The orange print on the glass has the Amperex globe logo. Both tubes test as new and are matched for both mA and Gm.
GE 7247 / 12DW7
GE 7247 / 12DW7
Price: $32.00
GE 7247 / 12DW7
This 1960s GE 7247 is a high reliability 12DW7 preamp tube. It has ribbed gray plates and a halo getter. The white print on the glass has the GE logo. Tube tests as new with low noise.
RT EF86 / 6267 - mesh plates, Bugle Boy label
RT EF86 / 6267 - mesh plate, Bugle Boy label
Price: $67.00
RT EF86 / 6267 - mesh plate, Bugle Boy label
This 1961 RT EF86 / 6267 tube has mesh plates and a halo getter (8Y5 series). The white print on the glass has the Amperex Bugle Boy label in excellent condition. Tube tests as new with high gain and low noise.
Sylvania 6SN7GTB - matched quad
Sylvania 6SN7GTB - matched quad
Price: $154.00
Sylvania 6SN7GTB - matched quad
The 1960s Sylvania 6SN7GTB tubes in this precisely matched quad have black plates and lots of chrome flashing. The black bases have green print with the Sylvania lightening logo and matching date codes. All four tubes test as new with very low noise.
Tung-Sol 12AU7 / 12AU7A - gray plates, matched pair
Tung-Sol 12AU7 / 12AU7A - gray plates, matched pair
Price: $84.00
Tung-Sol 12AU7 / 12AU7A - gray plates, matched pair
The 1959 Tung-Sol 12AU7A tubes in this precisely matched pair have long gray plates and horseshoe getters. The white print on the glass has the Tung-Sol logo. Both tubes test as new with balanced sections.
GE JAN 5751 / 12AX7 - gray plates, triple mica, support rods
GE 5751 / 12AX7 - gray plates, triple mica
Price: From $32.00 to $67.00
GE 5751 / 12AX7 - gray plates, triple mica
This 1960s GE 5751 tube is a military spec, lower gain 12AX7 equivalent. It has gray plates, triple micas, extra support rods, and a halo getter. The white print on the tube has the GE logo and reads "JG-5751." Click "more info" for current availability.

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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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