This 1960s GE 12AU7A tube has short gray plates with copper grid posts and a halo getter. The white print on the glass has the GE logo. Tube tests as new with low noise.
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The 1960s GE 12AU7A tubes in this precisely matched pair have pinched gray plates and halo getters. The white print on the glass has the GE logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
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This Mullard CV4003 tube is a military spec 12AU7A / ECC82 tube types (631 series). It has gray box plates with copper grid posts and a halo getter. The Mitcham, UK factory code is etched in the glass. Tube tests as new with balanced sections & low noise.
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This 1960s Mullard 12AU7A / ECC82 tube has gray plates and a halo getter (Gf2 series). The white print has logos of other companies and the Mitcham, UK factory code is etched in the glass. Tube tests as new with low noise.
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This rare 1959 Mullard 12AU7 / ECC82 has long plates and an O getter (k61 series). The white print has the famous Bugle Boy logo. The Mitcham, UK factory code is etched in the glass. Tube tests as new with balanced sections.
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This 1961 Mullard 12AU7A / ECC82 tube has gray plates, a halo getter, and the early Mullard shield logo with BVA military insignia (Gf1 series). The Blackburn, UK factory code is etched in the glass. Tube tests as new with very low noise.
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This rare 1958-59 Mullard 12AU7 / ECC82 has long plates and an O getter with dual support posts (k61 series). The white label is labeled for other companies and the Mitcham, UK factory code is etched in the glass. Tube tests as new with very low noise.
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The 1960 Mullard 12AU7A / ECC82 tubes in this precisely matched pair have gray plates and halo getters (Gf0 series). The white print on the glass has the Webcor logo. The Mitcham, UK factory code is etched in the glass. Both tubes test as new.
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The early 1960s RCA 12AU7A tubes in this precisely matched pair have long gray plates, side getters, and clear tops. The orange print on the glass is labeled for Hammond or Conn organs. Both tubes test as new with balanced sections and low noise.
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This 1960s 12AU7A tube was made by RCA and labeled for organ companies. It has a clear top, side getter, and ribbed gray plates. Tube tests as new.
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The late 1950s RCA 12AU7A tubes in this precisely matched pair have long gray plates and halo getters. The orange print on the glass is labeled for Conn organs. Both tubes test as new with balanced sections.
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This late 1950s RCA 12AU7A tube has long gray plates and a halo getter. The orange print on the glass is labeled for Conn organs. Tube tests as new with very low noise.
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This rare 1950s Sylvania 12AU7 tube has long shiny black plates with copper grid posts and a windmill getter. The green print on the glass has the Sylvania lightning logo (label may be partial/missing). Tube tests as new.
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This 1959 Sylvania 12AU7 tube has gray plates with copper grid posts and a D getter. The green print on the glass is labeled for Conn organs. Tube tests as new with balanced sections.
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The 1960s Sylvania 12AU7A tubes in this precisely matched pair were made in the USA and labeled for other companies. They have halo getters and long gray plates with copper grid posts. Both tubes test as new with very low noise.
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Price: From $10.00 to $23.00
This early 1960s 12AU7A tube was made by Sylvania and labeled for Hammond or Baldwin organs. It has long gray plates with copper grid posts and a halo getter. Click "more info" for current availability.
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Price: From $5.00 to $17.00
This 12AU7 tube was made in Japan and labeled for Baldwin organs. It has long gray plates and a halo getter. Click "more info" for current availability.
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The Toshiba 12AU7 tubes in this precisely matched pair were made in Japan and labeled for Baldwin organs. They have long gray plates and halo getters. Both tubes test as new and are matched for both current draw (mA) and transconductance (Gm).
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Price: From $24.00 to $37.00
This 1960s Tung-Sol 12AU7A tube has long gray plates and a halo or halo getter. The white print on the glass has the Tung-Sol logo. Click "more info" for current availability.
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This early 1960s military spec GE 5814A is a 12AU7 tube type. It has gray plates, triple micas, and extra support rods. The white print on the glass reads "JG-5814A" or "JG-5814WB." Tube tests as new with very low noise.
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The 1957 RCA 5963 tubes in this precisely matched pair are industrial 12AU7 type tubes. They have long black plates and foil D getters. The white print on the glass has the RCA logo. Both tubes test as new.
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This 1957 RCA 5963 is an industrial 12AU7 type tube. It has long black plates and a D getter with foil strip. The white print on the glass has the RCA logo. Tube tests as new.
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The 5963 tubes in this precisely matched pair are industrial versions of the 12AU7 type tube. They were made by RCA and labeled for Hewlett Packard. They have long gray plates and halo getters. Both tubes test as new with balanced sections and low noise.
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This 1970s military spec RCA 5963 is an industrial 12AU7 type tube. It has long gray plates and a halo getter. The green or orange print on the glass has the RCA logo and reads "JAN 5693." Tube tests as new.
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This 1960s military spec GE 6189 tube is a 12AU7WA type tube. It has gray plates, triple micas, and extra support rods. The white print on the glass has the GE logo (may be partial/missing). Tube tests as new with balanced sections.
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