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The late 1970s GE 6550A power tubes in this precision matched pair have crimped gray plates, 3 getters, metal collar bases, and 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched. While supplies last!
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The GE 6L6GC power tubes in this premium matched octet have gray plates, dual side getters, black bases, and the 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched for both current draw (mA) and transconductance (Gm).
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The Hickok 752A tube tester is widely recognized as one of the very best Hickok testers made. This unit is in very good electrical and cosmetic cosmetic condition. It is ready to use.
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The late 1970s Sylvania 6550 power tubes in this precisely matched quad have welded gray plates, 3 getters, and metal collar bases. The green print on the glass has the Philips ECG logo. Tubes test as new and are precisely matched.
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This vintage Svetlana "Winged C" 6H13C dual triode power tube is a Russian 6AS7G tube type popular in OTL and headphone amplifiers. It has black plates and dual bottom getters with lots of flashing. Tube tests as new with very low noise.
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The 1965 Amperex 6DJ8 / ECC88 tubes in this precisely matched pair have halo getters and silver risers. The white print has the HP logo and the Heerlen, Holland factory code is etched in the glass. Both tubes test as new with phono grade noise levels.
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This 1950s military spec Bendix 5992 tube is a ruggedized 6V6GT tube type. It has black plates, triple micas with support rods, and dual D getters. The brown base has red print with the National logo. Tube tests as new.
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This rare 1950 Cunningham 5Y3GT rectifier tube has smooth black plates and bottom D getters. The silver print on the glass has the Cunningham logo. Tube tests as new.
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This 1960s GE 6072A is a military spec 12AY7 tube type. It has black plates, support rods, and a disc getter. The white print on the glass has the GE logo with the 5-star broadcast quality label. Tube tests as new.
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The 1970s GE 6FQ7 / 6CG7 tubes in this precisely matched quad have halo getters and gray plates with copper grid posts. The white labels have the GE logo. All 4 tubes test as new and are matched for both mA and Gm.
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This very rare Mullard 6V6GT has black glass and a bottom getter. The white print on the glass has the Mullard logo and reads "Made in England." Tube tests as new with low noise.
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The 1960s Philips 6V6GT tubes in this precisely matched pair have brown bases, gray plates, and halo getters with lots of flashing. The yellow print on the glass has the Philips logo and "6V6GTY U.S.A." is etched in the glass. Tubes test as new.
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The 1961 RCA 6V6GT tubes in this precisely matched pair have gray plates and dual bottom D getters. The red print on the bases has the RCA logo and matching date codes (61-09). Both tubes test as new and are matched for both current draw (mA) and Gm.
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The vintage Russian 6P14P-EV (6Π14Π-EB in Cyrillic script) tubes in this precisely matched quad are high-reliability EL84 / 6BQ5 type tubes. They have a higher maximum plate voltage and dissipation than standard 6BQ5 tubes. Tubes test as new.
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The late 1960s Siemens E83CC tubes in this precisely matched pair are premium quality 12AX7 / ECC83 tubes. They have gray plates and halo getters. The white labels are missing. Both tubes test as new with phono / V1 grade noise levels.
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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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