• New
Radio Corporation of America

6SN7GTB BLACK PLATE

79.00 USD

Impossible to find double triode amplifier tubes manufactured in USA/Canada by renowned RCA. These beautiful approx. 1970's 8 pin octal based glass tubes come with black plates and round side getters. They are glass etched 6SN7GTB MADE IN CANADA with various production codes. Boxes are standard RCA new style red printed 6SN7GTB. Photo is typical of available inventory.

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

14 Items

Data sheet

Base
8 pin Octal
Boite type
14/29
Emplacement
SS
Fonction
Double triode
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