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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 pair have gray plates, dual side getters, and black bases. They also have matching date codes and the 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched.
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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 GE 7044 tubes in this precisely matched pair have halo getters and gray plates with copper grid posts. The green 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 very rare 1950s Telefunken 6SN7GTA tube was made in West Germany. It has gray plates with copper grid posts and the Telefunken diamond logo is printed on the glass (partial). Tube tests as new with precisely balanced sections and 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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The 1970s GE 6FQ7 / 6CG7 tubes in this precisely matched pair have halo getters and gray plates with copper grid posts. The white labels have the GE logo. Both tubes test as new and are matched for both mA and Gm.
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The early 1970s Mullard 12AT7 tubes in this precisely matched pair have gray plates and halo getters (VF3 series). They have the Amperex logo and the Blackburn, UK factory codes are etched in the glass. Both tubes test as new.
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This rare 1959 "fat base" Mullard GZ34 / 5AR4 rectifier tube has gray plates and dual halo getters (f31 series). The partial white print on the glass is labeled "Dynaco by Mullard." The Blackburn, UK factory code is etched in the glass. Tube tests as new.
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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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This 1973 RCA 5U4GB full-wave rectifier tube has black plates and a side getter. The red print on the glass has the RCA logo. Tube tests as new.
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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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This 1968 Sonotone 12AX7 / ECC83 tube has gray plates, a side D getter, and a clear top. The yellow print on the glass has the Webcor logo. Tube tests as new with balanced sections and phono/V1 grade noise levels.
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The military spec Sylvania 12AX7 tubes in this precisely matched pair have gray plates with copper grid posts and halo getters. The blue or green labels have the PhilipsECG logo and read "JAN 12AX7WA." Both tubes tests as new with phono 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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