Tube Tester

Tube Tester

Written by Frank Doris

I’m afraid to even turn this thing on. Jennings Model J-1005 high voltage voltmeter.


A true classic and recommended reading for anyone into vacuum tubes.


A classic of a different kind; one of the first digital audio blockbusters. Dig that futuro-bank-check typeface! From Audio, September 1979.


Has anyone ever heard or even seen one of these? From Audio, September 1956.


The cure for rotton sound! (Read the third sentence.) From Audio, January 1980.

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