General Electric (GE)

6414 IBM

23.00 USD

Top of the line double triode tubes manufactured for computer giant IBM in the United States by General Electric. These amazing 9 pin miniature glass tubes, 1950's and 1960's production, come with gray plates, top getters, tough internal construction, and 3 mica spacers. They are printed in white with GE logo, IBM MADE IN U.S.A. with 6 digit production and dot code, part number 3000528 Owensboro Kentucky 188-5 code, and glass etched 0528 with GE logo.

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.