General Electric (GE)

12AU6 / 8426A MATCHED TEKTRONIX

35.00 USD

Matched pairs of fine high transconductance amplifier tubes manufactured and tested in the United States by GE, then matched by electronics giant Tektronix. These amazing 7 pin miniature glass pentode tubes come with gray plates and top getters, printed GE ELECTRONIC TUBE 8426A/12AU6, engraved 12AU6, with stick on individually coded Tektronix label. Boxes are standard white Tektronix pairs part number printed 157-0076-00 SELECTED PAIR. Price is for one pair, 2 tubes.

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 (GE)
4 Items

Data sheet

Base
7 pin miniature B7G
Boite type
1/2
Emplacement
42
Fonction
Pentode