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GE 12B4 / 12B4A - matched pair
GE 12B4 / 12B4A - matched pair
Price: $39.00
GE 12B4 / 12B4A - matched pair
The GE 12B4A tubes in this matched pair have black plates and halo getters with lots of flashing. The white print on the glass has the HP logo. Both tubes test as new and are matched for both transconductance (Gm) and current draw (mA).
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.
Mullard ECC189 - A frame, dimpled disc getter
Mullard ECC189 - A frame, dimpled disc getter
Price: $49.00
Mullard ECC189 - A frame, dimpled disc getter
This ECC189 dual triode tube was made by Mullard and labeled for RTC. It has the highly sought after "A" frame structure with the dimpled disk getter. Tube tests as new.
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.
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.
National Union 56 triode - matched pair
National Union 56 triode - matched pair
Price: $59.00
National Union 56 triode - matched pair
The 1940s National Union 56 tubes in this precisely matched pair are vintage 5-pin triodes. The white print on the base has the National Union logo. Both tubes test as new and are precisely matched for both current draw (mA) and Gm.
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.
Tung-Sol 5V4GA
Tung-Sol 5V4GA
Price: $34.00
Tung-Sol 5V4GA
This 1954 Tung-Sol 5V4G rectifier tube has black plates and a top getter. The white print on the base has the Tung-Sol logo. Tube tests as new.
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.
5Z4 - various brands, metal bottle
5Z4 - metal bottle, various brands
Price: $9.00
5Z4 - metal bottle, various brands
This 5Z4 rectifier tube was made in the USA by various companies. It has a metal bottle with silver or red print. Tube tests as new.
Mullard CV2748 / GZ30 / 5Z4
Mullard CV2748 / GZ30 / 5Z4
Price: $74.00
Mullard CV2748 / GZ30 / 5Z4
This 1966 military spec Mullard CV2748 / GZ30 rectifier is a 5Z4 tube type. It has gray plates and a brown base. The white print on the glass reads "CV2748 KB/DA" and the Blackburn, UK factory code is etched in the glass. Tube tests as new.
Mullard EZ80 / 6V4 - various labels
Mullard EZ80 / 6V4 - various labels
Price: $34.00
Mullard EZ80 / 6V4 - various labels
This 1960s Mullard EZ80 / 6V4 rectifier tube has black plates and a D or halo getter. The white or red print on the glass is labeled for other companies (Bogen, Eico, Webcor, etc). The Blackburn, UK factory code is etched in the glass. Tube tests as new.
RCA 6350 - gray plates, matched pair
RCA 6350 - gray plates, matched pair
Price: $49.00
RCA 6350 - gray plates, matched pair
The late 1960s RCA 6350 tubes in this precisely matched pair have gray plates and halo getters. The red label on the glass is missing. Both tubes test as new. They are matched for both current draw (mA) and transconductance (Gm).
GE 6AN8A - black plates, halo getter
GE 6AN8 / 6AN8A - black plates, halo getter
Price: $18.00
GE 6AN8 / 6AN8A - black plates, halo getter
This 1963 GE 6AN8A tube has black plates and a halo getter. The print on the glass has the white GE logo and "6GH8A" is etched in the glass. Tube tests as new with very low noise.
Sylvania 6AN8A - GE label, matched pair
Sylvania 6AN8A - GE label, matched pair
Price: $54.00
Sylvania 6AN8A - GE label, matched pair
The Sylvania 6AN8A tubes in this precisely matched pair have gray plates and halo getters. The white print on the glass has the GE logo. Both tubes test as new with very low noise and are matched for both current draw (mA) and Gm.
Mazda ECL82 / 6BM8 - Amperex label
Mazda ECL82 / 6BM8 - Amperex label
Price: $39.00
Mazda ECL82 / 6BM8 - Amperex label
This 1968 Mazda ECL82 / 6BM8 tube has gray plates with copper grid posts and a halo getter (OG8 series). The orange label has the Amperex globe logo and the Brussels factory code is etched in the glass. Tube tests as new.
Mullard ECL82 / 6BM8
Mullard ECL82 / 6BM8
Price: $34.00
Mullard ECL82 / 6BM8
This 1966 Mullard ECL82 / 6BM8 tube has gray plates with copper grid posts and a halo getter. The Blackburn, UK factory code is etched in the glass. The glass has the browning that is characteristic of Mullard tubes. Tube tests as new.
GE 6C4 - matched pairs
GE 6C4 - matched pairs
Price: $9.99
GE 6C4 - matched pairs
These 6C4 triodes made by GE have gray plates. They are sold as matched pairs.
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.
GE 6EU7 - gray plates, halo getter
GE 6EU7 - gray plates, halo getter
Price: $34.00
GE 6EU7 - gray plates, halo getter
This 1960s GE 6EU7 tube has short gray plates and a halo getter. The white print on the glass has the GE logo. Tube tests as new with very low noise and ships in its original box.
Amperex 6GW8 / ECL86 - matched pair
Amperex 6GW8 / ECL86 - matched pair
Price: $77.00
Amperex 6GW8 / ECL86 - matched pair
The Amperex 6GW8 / ECL86 tubes in this precision matched pair have gray plates with copper grid posts and halo getters (WSF series). They are labeled for Hammond and the Heerlen, Holland factory code is etched in the glass. Both tubes test as new.
Raytheon 6J5WGT - black plate, metal collar base
Raytheon 6J5WGT - black plate, metal collar base
Price: $34.00
Raytheon 6J5WGT - black plate, metal collar base
This 1952 Raytheon 6J5WGT tube is a military spec 6J5 tube type. It has a black plates and a top getter with dual support posts. The metal collar base has red print that reads JAN-CRP-6J5WGT with the Raytheon logo. Tube tests as new with low noise.
RCA 6J5 - metal bottle
RCA 6J5 - metal bottle
Price: $7.00
RCA 6J5 - metal bottle
This RCA 6J5 tube has a metal bottle with red or silver print. Tube tests as new with very low noise.
RCA 6J5GT - black plate, metal collar base
RCA 6J5GT - black plate, metal collar base
Price: $32.00
RCA 6J5GT - black plate, metal collar base
This 1950s RCA 6J5GT tube has a black plate and a bottom getter. The metal collar base has red or black print with the RCA logo. Tube tests as new with low noise. It ships in a new white box.
Sylvania 6J5GT/G - black plates, metal collar base
Sylvania 6J5GT/G - black plate, metal collar base
Price: From $14.00 to $32.00
Sylvania 6J5GT/G - black plate, metal collar base
This 1940s Sylvania 6J5GT/G tube has round black plates and a bottom getter with lots of flashing. The metal collar base has green or black print with the Sylvania lightning logo. Click "more info" for current availability.
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.
RCA 1629 / VT-138 - magic eye tube
RCA 1629 / VT-138 - magic eye tube
Price: $44.00
RCA 1629 / VT-138 - magic eye tube
This RCA 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. Tube tests as new / bright.
RCA 1629 / VT-138 - magic eye tube, gray glass
RCA 1629 / VT-138 - magic eye tube, gray glass
Price: $37.00
RCA 1629 / VT-138 - magic eye tube, gray glass
This RCA 1629 / VT-138 is a military spec eye tube for use as a tuning level indicator. It has gray glass and a green phosphor element. Tube tests as new / bright.
Sylvania 1629 / VT-138 - magic eye tube
Sylvania 1629 / VT-138 - magic eye tube
Price: $44.00
Sylvania 1629 / VT-138 - magic eye tube
This Sylvania 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. Tube tests as new / bright.
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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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