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Mullard 6BM8 / ECL82 - RCA labels, matched pair
Mullard 6BM8 / ECL82 - RCA labels, matched pair
Price: $89.00
Mullard 6BM8 / ECL82 - RCA labels, matched pair
The Mullard 6BM8 / ECL82 tubes in this precision matched pair have gray plates with copper grid posts and halo getters. The red labels have the RCA logos. Both tubes test as new and are matched for both current draw (mA) and Gm.
Mullard ECL82 / 6BM8 - various labelsMullard ECL82 / 6BM8 - various labels
Mullard ECL82 / 6BM8 - various labels
Price: $39.00
Mullard ECL82 / 6BM8 - various labels
This 1960s Mullard ECL82 / 6BM8 tube was made in England (Blackburn factory code) and labeled for Sylvania. Tube tests as new with low noise.
Sylvania 6BM8 / ECL82 - RCA labels, matched pair
Sylvania 6BM8 / ECL82 - RCA labels, matched pair
Price: $74.00
Sylvania 6BM8 / ECL82 - RCA labels, matched pair
The Sylvania 6BM8 / ECL82 tubes in this precision matched pair have gray plates with copper grid posts and halo getters. The red print on the glass has the RCA logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
Tungsram 6BM8 / ECL82 - matched pair
Tungsram 6BM8 / ECL82 - matched pair
Price: $74.00
Tungsram 6BM8 / ECL82 - matched pair
The Tungsram 6BM8 / ECL82 tubes in this precision matched pair have gray plates with copper grid posts and halo getters. The yellow print on the glass has the Tungsram logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
GE 12B4 / 12B4A - matched pair
GE 12B4 / 12B4A - matched pair
Price: $39.00
GE 12B4 / 12B4A - matched pair
The 1960s 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 GE logo. Both tubes test as new and are matched for both transconductance (Gm) and current draw (mA).
GE 12X4 - gray plates, halo getter
GE 12X4 - gray plates, halo getter
Price: $14.00
GE 12X4 - gray plates, halo getter
This 1960s GE 12X4 rectifier tube has gray plates and a halo getter. The red or white print on the glass has the GE logo. Tube tests as new.
RCA 12X4 - halo getter
RCA 12X4 - black plates, halo getter
Price: $14.00
RCA 12X4 - black plates, halo getter
This 1960s RCA 12X4 rectifier tube has black plates and a halo getter. The red print on the glass has the RCA logo. Tube tests as new.
Sovtek 6H30Pi-EB
Sovtek 6H30Pi-EB
Price: $29.00
Sovtek 6H30Pi-EB
This Sovtek 6H30Pi-EB tube has gray plates and halo or dish getter. The black print on the glass has the Sovtek logo. Tube tests as new with very low noise.
Sovtek 6H30Pi-EB - matched pair
Sovtek 6H30Pi-EB - matched pair
Price: $64.00
Sovtek 6H30Pi-EB - matched pair
The Sovtek 6H30Pi-EB tubes in this precisely matched pair have gray plates and halo or dish getters. Both tubes tests as new with balanced sections and very low noise. They are matched for both current draw (mA) and transconductance (Gm).
Westinghouse 12X4 - black plates, D getter
Westinghouse 12X4 - black plates, D getter
Price: $14.00
Westinghouse 12X4 - black plates, D getter
This 1960s Westinghouse 12X4 rectifier tube has black plates and a D getter. The yellow print on the glass has the Westinghouse logo (partial). Tube tests as new.
1L6 heptode
GE 1L6 heptode
Price: $57.00
GE 1L6 heptode
This GE 1L6 tube has a silver shield and halo or horseshoe getter. Tube tests as new.
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.
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 $24.00
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." Click "more info" for current availability.
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
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.
Sylvania 2C51 - gray plates
Sylvania 2C51 - gray plates
Price: $14.00
Sylvania 2C51 - gray plates
This 1966 Sylvania 2C51 tube has gray plates and a halo getter. The green print on the glass has the Sylvania logo. Tube tests as new with low noise.
Tung-Sol JTL 5670 / 2C51 - black plates
Tung-Sol JTL 5670 / 2C51 - black plates
Price: $27.00
Tung-Sol JTL 5670 / 2C51 - black plates
This 1960 military spec Tung-Sol 5670 /2C51 tube has black plates and a halo getter. The white print on the glass has the Tung-Sol logo and reads "JTL-5670" (may be partial). Tube tests as new with low noise.
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.
Mullard CV2748 / GZ30 / 5Z4
Mullard CV2748 / GZ30 / 5Z4GT
Price: $44.00
Mullard CV2748 / GZ30 / 5Z4GT
This 1960s military spec Mullard CV2748 / GZ30 rectifier is a 5Z4 equivalent. This indirectly-heated rectifier should be considered an upgrade for a 5Y3 tube in most circuits. The Blackburn, UK factory code is etched in the glass. Tube tests as new.
Mullard CV2748 / GZ30 / 5Z4 - matched pair
Mullard CV2748 / GZ30 / 5Z4GT - matched pair
Price: $99.00
Mullard CV2748 / GZ30 / 5Z4GT - matched pair
The 1960s military spec Mullard CV2748 / GZ30 rectifier tubes in this precisely matched pair are 5Z4 equivalents. These indirectly-heated rectifiers should be considered an upgrade for 5Y3 tubes in most circuits. Both tubes test as new.
Raytheon 5Y3WGTB / 6087 - black plates
Raytheon 5Y3WGTB / 6087 - black plates
Price: $44.00
Raytheon 5Y3WGTB / 6087 - black plates
This 1960s military spec Raytheon 6087 / 5Y3WGTB is a ruggedized, indirectly heated 5Y3 tube type. It has black plates, D getter, and a brown base. The yellow print on the glass has the Raytheon logo. Tube tests as new.
Russian 5Ц4С / 5U4C / 5Z4GT
Russian 5U4C / 5Ц4С / 5Z4GT
Price: $14.00
Russian 5U4C / 5Ц4С / 5Z4GT
This vintage Russian 5U4C / 5Ц4С rectifier is a 5Z4 equivalent. This slow-rise, indirectly-heated rectifier should be considered an upgrade for a 5Y3 tube in most circuits, and will drop slightly less voltage. Tube tests as new.
Russian 5Ц4С / 5U4C / 5Z4GT - matched pair
Russian 5U4C / 5Ц4С / 5Z4GT - matched pair
Price: $37.00
Russian 5U4C / 5Ц4С / 5Z4GT - matched pair
The vintage Russian 5U4C / 5Ц4С rectifiers in this precisely matched pair are 5Z4 equivalents. These indirectly-heated rectifiers should be considered an upgrade for 5Y3 tubes in most circuits, and will drop slightly less voltage. Both tubes test a
RCA 6350 - black plates, matched pair
RCA 6350 - black plates, matched pair
Price: $54.00
RCA 6350 - black plates, matched pair
The 1960 RCA 6350 tubes in this precisely matched pair have black plates and dimple D getters. The white label on the glass is labeled for Remington Rand (partial). Both tubes test as new.
RCA 6350 - black plates, triple mica, matched pair
RCA 6350 - black plates, triple mica, matched pair
Price: $64.00
RCA 6350 - black plates, triple mica, matched pair
The rare RCA 6350 tubes in this precisely matched pair have black plates and triple micas. The white label on the glass is missing. Both tubes test as new. They are matched for both current draw (mA) and transconductance (Gm).
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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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