5963 / 12AU7 GRAY PLATE
  • 5963 / 12AU7 GRAY PLATE
  • 5963 / 12AU7 GRAY PLATE
General Electric

5963 / 12AU7 GRAY PLATE

24.00 USD

Quality double triode amplifier tubes manufactured in the United States by renowned General Electric. These 9 pin miniature glass tubes have long gray ribbed plates and top halo getters. They are printed in white with old style GE logo, ELECTRONIC TUBE, and coded A6 QX, 1960's production. They are also glass etched 5963 U.S.A. with dot code. Boxes are standard GE orange and gray printed GE 5963.

Condition

Tube Matching
Tube Matching
6.00 USD by tube

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.
Quantity

General Electric
49 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
4/14
Emplacement
SS
Quide
913
Fonction
Double triode
Comments (0)
No customer reviews for the moment.