5751 JAN

87.00 USD

62.00 USD Save 25.00 USD

Top quality gray plate round top getter double triodes completely interchangeable with 12AX7, suitable for audio applications. These fine 9-pin glass tubes manufactured for the US military by renowned Sylvania, are printed in green JAN 5751 SYLVANIA U.S.A. with date codes from 1972 to 1979, and are also glass-etched 5751 U.S.A. They are pulled from unused replacement modules from Canadian Armed Forces equipment. Singles, pairs and quads available.

Condition

New Bulk

	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.