Spa Resource
EEVblog 926 Introduction To The Oscilloscope

Photos for condition and quality. Tubes TESTED AND sounded good in my BOGEM AMP! This is a world class tester that is calibrated by the Hickok doctor. TESTED ON Calibrated HICKOK TV-7 B/U. Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.