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On auction are 2 x 6J7G audio Pentodes, glass ST shape versions. Both have a solid shield internally. They are used but tested strong on a CT-160 valve tester. Tested for gas, leakage, shorts and Gm.

 

Description Audio input selector module board, with 12V DC voltage regulator.This item has been assembled, and electrical test passed. 4 Dual channel input, 1 dual channel output.Led indicator for eac

 

Hello again...These are the last of the 310A's...I have sold already 23 of these 3 in one lot that went to China and the large lot earlier this year of 19 that also went overseas..The point here that

 

You are bidding on one Collins 212Z-1 remote microphone mixer amplifier in very good condition. It is contained in a case similar to a portable typewriter. The unit dates to 1958. Solid state internal

 

Extremely Rare Acoustic Research, AR, Teledyne, Dome Tweeter Pair Tested and sound amazing, Included is original foam and gasket and screws. Tweeters will also work for other models. AR 9, AR 90, AR 9

 

Up for auction is 1 single NOS TUNG-SOL valve / tube with black glass: TUNG-SOL 6SN7GT / VT231! Very rare square plate construction! Very good sounding! Made in the USA This is a military quality doub

 

Vintage National Radio Discovery Lab. Item powers up and power supply voltages have been checked but no further testing has been done. Case has some scratches and scuffs. No instruction manual or sche

 

Western Electric 216A Vintage Tube Tennis Ball Type, Display Only Description This tube is being sold as “Display Only” as the tip on the top of the ball has been broken off. Otherwise, the tube l

 

You are bidding for the following mil spec items: 8 of - 8 pin tube socket by Americal Phenolic Corp Chicago 4 of - 4 pin tube socket by Americal Phenolic Corp Chicago 8 of - Birtcher clamp holder 4 o