Ediswan

45A5 / UL41 GRAY PLATE

29.00 USD

Amazing impossible to find pristine pentode power amplifier tubes manufactured in England by renowned Ediswan. These fine mininature glass 8 pin Rimlock B8A based tubes, we believe 1940's production, capable of over 4 watts output single ended, come with gray plates and top getters. They are printed in white EDISWAN VALVE ENGLAND 45A5 MADE IN ENGLAND B.V.A. and coded X8. Boxes are red and blue Ediswan printed FOR EXPORT ONLY B.V.A. ASSOCIATED ELECTRICAL INDUSTRIES LTD A.E.I. 45A5.

Condition

New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE WHY ? 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. HOW ? 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.