RCA vacuum tubes


54.00 USD

High quality beam power amplifier tubes manufactured by RCA in the United States. These powerful glass 8 pin octal based tubes can easily output 18 watts in audio and hifi equipment. They come with gray plates and top or side getters. They are glass-etched 7355 U.S.A. with dot codes, and are printed in red with RCA logo. Boxes are standard RCA red and black printed 7355. Photo is typical of available stock.


Tube Matching
Tube Matching
6.00 USD by tube


A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound.


All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each  individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.


10 Items

Data sheet

8 pin Octal
Boite type
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