12AX7WA GRAY PLATE JAN

59.00 USD

Top of the line audio double triode tubes manufactured for the US armed forces by General Electric. These tough 9 pin miniature glass tubes come with gray plates, two thick mica spacers, and top disc getters. They are printed in red or green with GE logo, JLRV 12AX7WA MADE IN U.S.A./CANADA with 1960's date codes. They are also glass engraved 12AX7WA USA/CANADA. Photo is typical of existing stock.

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.