This 1960s Mullard ECL82 / 6BM8 tube was made in England (Blackburn factory code) and labeled for Sylvania. Tube tests as new with low noise.
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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.
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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.
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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).
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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.
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This GE 1L6 tube has a silver shield and halo or horseshoe getter. Tube tests as new.
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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.
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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.
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The 1950s National Union 56 triode tubes in this precisely matched pair have black plates and bottom getters with lots of flashing. The white labels on the base have the NU logo. Both tubes test as new with low noise.
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Price: From $34.00 to $57.00
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.
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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.
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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.
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Price: From $14.00 to $24.00
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.
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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.
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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.
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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.
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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 red print on the base has the Raytheon logo. Tube tests as new.
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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.
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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
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This 1961 Mullard EZ80 / 6V4 rectifier tube has gray plates and a D getter (kC1 series). The white print on the glass has the Mullard shield logo. The Blackburn, UK factory code is etched in the glass. Tube tests as new.
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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.
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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.
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This 1970s RCA 6AN8A tube has gray plates and a disc getter. The red print on the glass has the RCA logo. Tube tests as new with very low noise.
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This 1960s Mazda ECL82 / 6BM8 tube has gray plates with copper grid posts and a halo getter (OG-2 series). The white label has the GE logo and the Brussels factory code is etched in the glass. Tube tests as new.
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This 1970s GE 6C4 tube has a gray plate and halo getter. The white print on the glass has the GE logo. This tube tests as new with low noise.
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These 1970s GE 6C4 tubes have gray plates and halo getters. The white print on the glass has the GE logo. Both tubes test as new with low noise.
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This 1964 GE 6T9 tube has gray plates and a side getter. The red label has the GE logo. Tube tests as new.
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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.
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The 1964 Mullard 6EU7 tubes in this precisely matched pair have short gray plates with copper grid posts and halo getters. The red label has the 3M logo and the Blackburn, UK factory code is etched in the glass. Both tubes test as new with low noise.
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This 1960s Raytheon 6EU7 tube has short gray plates with copper grid posts and a halo getter. The yellow print on the glass has the Raytheon logo. Tube tests as new with very low noise.
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