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The late 1970s GE 6550A power tubes in this premium matched quad have gray plates, 3 getters, metal collar bases and 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched for both mA and Gm. 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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In the Genalex / Marconi-Osram tradition of providing the highest quality triode tubes like the PX4 and PX25 of the 1930s, New Sensor has released the Genalex Gold Lion PX300B power triode. Price includes extended burn-in and precision matching.
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Price: $74.00
Sale Price: $59.20
You Save: $14.80 (20 %)
This Shuguang 211 tube is a directly heated power triode with a carbon anode capable of up to 40 watts in single ended operation. Price includes extended burn-in and precision matching.
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The late 1970s Sylvania 6550 power tubes in this premium matched octet have welded gray plates, 3 getters, and metal collar bases. The print on the glass has the Sylvania or PhilipsECG logo. Tubes test as new and are precisely matched for both mA and Gm.
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The 1961 Amperex EL84 / 6BQ5 tubes in this precisely matched pair have gray plates and large halo getters (rX4 series). The white print on the glass has the Bugle Boy logo. Both tubes test as new and are matched for both current draw and transconductance.
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Price: From $42.00 to $44.00
This 1960 GE 6072 is a military spec 12AY7 type tube. It has black plates, a halo getter, and a triple mica. The white print on the glass has the IBM logo. Tube tests as new with very low noise.
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The 1978 GEC A2900 tubes in this matched pair are a premium quality Genalex 12AT7 tube type. They were made in England by the Marconi-Osram Valve Company (MOV). Click "more info" for test results.
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Price: From $164.00 to $179.00
The 1960s-1970s Mullard 12AX7A / ECC83 tubes (I61 & I63 series) in this precisely matched pair have gray plates and halo getters. The Blackburn factory code is etched in the glass. Click "more info" for current availability.
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The RCA 5U4GB rectifier tubes in this precisely matched pair have black plates and a top halo getter. The tall bottle has red print with the RCA logo and "5U4GB U.S.A." printed on it. Both tubes test as new with balanced diode sections.
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The 1961 RT EF86 tubes in this matched pair have mesh plates and halo getters. The white label has the Tung-Sol logo and the Chartes, France factory code is etched in the glass. Both tubes test as new with very low noise and are precisely matched.
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The 1950s Sylvania 6V6GT power tubes in this precisely matched pair have black plates, gray glass, and bottom getters. The green print on the bases has the Sylvania logo. Both tubes test as new and are precisely matched.
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This rare 1960 Sonotone 7025 is a low noise 12AX7 / ECC83 tube type. It has gray plates, a side D getter, and a clear top. The white print on the glass has the Sonotone logo and reads "made in USA." Tube tests as new with high gain and very low noise.
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The 1960s Amperex JAN 7308 tubes in this precisely matched pair are premium quality 6DJ8 / ECC88 tubes made for the US military (VR5 series). They have gold pins, gray risers, and large O getters. Click "more info" for current availability.
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This late 1950s-early 1960s Philips EZ80 / 6V4 rectifier tube has a gray plates and a D getter. The white print on the glass has the GE logo and says "made in Holland." The Sittard or Bruxelles factory code is etched in the glass. Tube tests as new.
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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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