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Old Triodes and Radio Tubes

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Cunningham CX-301A / 01A triode - globe bottle, engraved base
Cunningham CX-301A / 01A triode - globe bottle, engraved base
Price: $37.00
Cunningham CX-301A / 01A triode - globe bottle, engraved base
This 1930s Cunningham CX-301A power output triode is compatible with any long-pin 01A type tube (201A, 301A, UX-201A, CX301A). Its globe bottle is completely enveloped in flashing. The engraved black base has the Cunningham logo. Tube tests as new.
1L6 heptode
Price: $57.00
1L6 heptode
This 1959 Sylvania 1L6 tube has a silver shield and halo or horseshoe getter. The print on the glass is labeled for Sylvania or GE. Tube tests as new. It ships in its original box.
Silvertone 30 / 230 triode - matched pair
Silvertone 30 / 230 triode - matched pair
Price: $44.00
Silvertone 30 / 230 triode - matched pair
The 1930s Silvertone 230 tubes in this precisely matched pair are vintage 4-pin triodes compatible with any 30 triode. The engraved bases have the Super Silvertone logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
Raytheon 420A / CK 5755 - clear top
Price: $59.00
Raytheon 420A / CK 5755 - clear top
This 1960s Raytheon 5755 tube is a military spec equivalent to the Western Electric 420A dual triode. It has smooth gray plates and a clear top. The yellow print on the glass has the Raytheon logo. Tube tests as new and with balanced and very low noise.
Raytheon 420A / 5755 - matched pair, clear top
Raytheon 420A / CK 5755 - matched pair, clear top
Price: $124.00
Raytheon 420A / CK 5755 - matched pair, clear top
The 1961 Raytheon 5755 tubes in this precisely matched pair are the military spec equivalent to the Western Electric 420A dual triode tube. They have smooth gray plates and clear tops. Both tubes test as new and are matched for both current draw and Gm.
Western Electric 420A / JW 5755
Western Electric 420A / JW 5755
Price: From $69.00 to $74.00
Western Electric 420A / JW 5755
This 1959 Western Electric JW 5755 tube is a military spec 420A dual triode. It has smooth gray plates and a windmill getter. Tube tests as new with very low noise and ships in its original box.
Western Electric 420A / JW 5755 - matched pair
Western Electric 420A / JW 5755 - matched pair
Price: $189.00
Western Electric 420A / JW 5755 - matched pair
The 1959 Western Electric JW 5755 tubes in this precisely matched pair are the military spec equivalent to the 420A dual triode. They have smooth gray plates and windmill getters. Both tubes test as new and are matched for both transconductance and mA.
Ken-Rad 45 triode - matched pair
Ken-Rad 45 triode - matched pair
Price: $129.00
Ken-Rad 45 triode - matched pair
The Ken-Rad 45 triode tubes in this precisely matched pair have ST bottles and bottom dish getters. The silver labels have the Ken-Rad and Crosley logos. Both tubes test good and are matched for both current draw (24.0 & 24.8 mA) and Gm (81% & 82%).
Philco 45 triode - matched pair, engraved base
Philco 45 triode - matched pair, engraved base
Price: $139.00
Philco 45 triode - matched pair, engraved base
The Philco 45 triode tubes in this precisely matched pair have ST bottles and engraved bases (Philco & Champion). The Champion tube has the number 45 scratched in the base. They are matched for both current draw (27.8 & 28.0 mA) and Gm (93% & 96%).
Arcturus 56 triode - blue globe bottle, engraved base
Arcturus 56 triode - blue globe bottle, engraved base
Price: $99.00
Arcturus 56 triode - blue globe bottle, engraved base
This gorgeous 56 vintage 5-pin triode by Arcturus has a blue globe bottle and engraved black base in outstanding condition. I've listened to this tube in a 300B SET amplifier and verified that it is not microphonic and it does not hum.
RCA JAN 56 triode - matched pair
RCA JAN 56 triode - matched pair
Price: From $39.00 to $59.00
RCA JAN 56 triode - matched pair
The military spec RCA 56 tubes in this precisely matched pair are vintage 5-pin triodes. They have black plates and bottom getters. The silver print on their black bases reads U.S. Navy CRC 56. Click "more info" for current availability.
Sylvania 56 triode - matched pair
Sylvania 56 triode - matched pair
Price: From $29.00 to $57.00
Sylvania 56 triode - matched pair
The Sylvania 56 tubes in this matched pair are vintage 5-pin triodes. They have black plates and bottom getters. Their black bases have green print with the early Sylvania leaf logo. Both tubes test as new and are precisely matched.
GE JAN 5670 / 2C51 - black plates
GE JAN 5670 / 2C51 - black plates
Price: $17.00
GE JAN 5670 / 2C51 - black plates
This military spec GE 5670 /2C51 tube has black plates and a halo getter. The green label has the GE logo and reads "JAN-5670W." The glass is etched with the part number and a triangle to indicate special quality. Tube tests as new with low noise.
GE JAN 5670 / 2C51 - black plates, matched pair
GE JAN 5670 / 2C51 - black plates, matched pair
Price: $39.00
GE JAN 5670 / 2C51 - black plates, matched pair
The military spec GE 5670 /2C51 tubes in this precisely matched pair have black plates and halo getters. The green labels read "JAN-5670W" and the glass is etched with a triangle to indicate special quality. Both tubes test as new with low noise.
Raytheon CK 5670 / 2C51 - black plates
Raytheon CK 5670 / 2C51 - black plates
Price: From $14.00 to $27.00
Raytheon CK 5670 / 2C51 - black plates
This 1960 military spec Raytheon 5670 /2C51 tube has black plates and a halo getter with dual support posts. The yellow print on the glass has the Raytheon logo and reads "CK-5670." Tube tests as new with low noise.
Raytheon JAN 5670 / 2C51 - gray plates
Raytheon JRP 5670 / 2C51 - gray plates
Price: $27.00
Raytheon JRP 5670 / 2C51 - gray plates
This 1965 military spec Raytheon 5670 /2C51 tube has gray plates and a "plus sign" getter with dual support posts. The red print on the glass has the Raytheon logo and reads "JRP-5670." Tube tests as new with low noise.
Raytheon JRP 5670 / 2C51 - gray plates
Raytheon JRP 5670 / 2C51 - gray plates, matched pair
Price: $59.00
Raytheon JRP 5670 / 2C51 - gray plates, matched pair
The 1965 military spec Raytheon 5670 /2C51 tubes in this precisely matched pair have gray plates and "plus sign" getters with dual support posts. The red print on the glass has the Raytheon logo and reads "JRP-5670." Both tubes test as new with low noise.
RCA JRC 5670 / 2C51 - gray plates, matched pair
RCA JRC 5670 / 2C51 - gray plates, matched pair
Price: $67.00
RCA JRC 5670 / 2C51 - gray plates, matched pair
The 1960s military spec RCA 5670 /2C51 tubes in this precisely matched pair have gray plates, triple micas, and D getters. The red print on the glass has the RCA logo and reads "JRC-5670." Both tubes test as new with low noise.
RCA JRC 5670 / 2C51 - gray plates
RCA JRC 5670 / 2C51 - gray plates, triple mica
Price: $29.00
RCA JRC 5670 / 2C51 - gray plates, triple mica
This 1962 military spec RCA 5670 /2C51 tube has gray plates, triple micas, and a D getter. The red print on the glass has the RCA logo and reads "JRC-5670." Tube tests as new with low noise.
Tung-Sol 5670 / 2C51 - black plates, matched pair
Tung-Sol 5670 / 2C51 - black plates, matched pair
Price: $59.00
Tung-Sol 5670 / 2C51 - black plates, matched pair
The 1960 military spec Tung-Sol 5670 /2C51 tubes in this precisely matched pair have black plates and halo getters with copper support posts. The white print on the glass has the Tung-Sol logo and reads "JTL-5670" (partial). Both tubes test as new.
Tung-Sol JTL 5670 / 2C51 - black plates
Tung-Sol JTL 5670 / 2C51 - black plates
Price: From $14.00 to $27.00
Tung-Sol JTL 5670 / 2C51 - black plates
This 1958 military spec Tung-Sol 5670 /2C51 tube has black plates and a D getter. The white print on the glass has the Tung-Sol logo and reads "JTL-5670" or "JTL-2C51" (partial/missing). Click "more info" for current availability.
Marconi 5Z3 - smooth black plates
Marconi 5Z3 - smooth black plates
Price: $49.00
Marconi 5Z3 - smooth black plates
This Marconi 5Z3 rectifier tube was made in Canada. It has smooth black plates and bottom D getter. The red print on the base has the Marconi Radiotron logo. Tube tests as new with balanced diode sections.
Raytheon 6B4G triode - matched pair
Raytheon 6B4G triode - matched pair
Price: $149.00
Raytheon 6B4G triode - matched pair
The 1940s Raytheon 6B4G triode tubes in this precisely matched pair have ST bottles, black plates, and bottom D getters with lots of flashing. The orange print on the black bases has the Raytheon logo. Click "more info" for test results.
Raytheon 6E5 - magic eye tube
Raytheon 6E5 - magic eye tube
Price: $49.00
Raytheon 6E5 - magic eye tube
This 1957 Raytheon 6E5 magic eye tube tuning level indicator has a green phosphor element. The yellow print on the base has the Raytheon logo. Tube tests as new / very bright.
6E5 Sylvania - eye tube
Sylvania 6E5 - magic eye tube
Price: $49.00
Sylvania 6E5 - magic eye tube
This 1950s Sylvania 6E5 magic eye tube tuning level indicator has a green phosphor element. The green print on the base has the Sylvania lightning logo or military JAN CHS label. Tube tests as new / very bright.
RCA 1629 / VT-138 - magic eye tube
Tung-Sol 1629 / VT-138 - magic eye tube
Price: $44.00
Tung-Sol 1629 / VT-138 - magic eye tube
This Tung-Sol 1629 / VT-138 is a military spec eye tube for use as a tuning level indicator. It has clear glass and a green phosphor element. The silver print on the base has the Tung-Sol logo and reads "CTL 1629" (scratches on base). Tube tests as new.
Tung-Sol 6E5 - magic eye tube, loose particle
Tung-Sol 6E5 - magic eye tube, loose particle
Price: $49.00
Sale Price: $29.00
Tung-Sol 6E5 - magic eye tube, loose particle
This 1950s Tung-Sol 6E5 magic eye tube tuning level indicator has a green phosphor element. The white print on the base has the Tung-Sol logo. Tube tests as new / very bright. It is discounted because there is a loose glass particle inside the bottle.
on sale
Russian 6E1P / 6BR5 / EM80 - magic eye tube
Russian 6E1P / 6BR5 / EM80 - magic eye tube
Price: $10.00
Russian 6E1P / 6BR5 / EM80 - magic eye tube
This Russian 6E1P "magic eye" tube is used as a tuning level indicator. It is equivalent to the EM80 and 6BR5 tube types. The gold print on the glass has the Reflektor factory logo. Tube tests as new / very bright.
Siemens EM84 / 6FG6 - magic eye tube
Siemens EM84 / 6FG6 - magic eye tube
Price: $15.00
Siemens EM84 / 6FG6 - magic eye tube
This Siemens EM84 / 6FG6 "magic eye" tube is used as a tuning level indicator. The white print on the glass has the Siemens logo. Tube tests as new / very bright.
National Union NX171A tiode - matched pair
National Union 71A triode - globe bottle, matched pair
Price: $159.00
National Union 71A triode - globe bottle, matched pair
The National Union 71A tubes in this precisely matched pair have silver plates and globe bottles with lots of chrome flashing. The engraved bases have the National Union logo and read "NX-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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