Sylvania 12SK7 12SK7GT Vacuum Tube Valve NOS-Testing Mitch Miller 10-15% OF THEM ARE NOT

10-15% OF THEM ARE NOT SUITABLE FOR HIGH END AUDIO APPLICATIONS

two Hytrons and one Sylvania

Tube One measured 76/76 and Tube Two measured 79/77 where minimum (65%) is 50/50

This lot of two National Union type 85 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Sylvania 12SK7 12SK7GT Vacuum Tube Valve NOS-Testing Mitch Miller 10-15% OF THEM ARE NOTThis new old stock testing Sylvania 12SK7GT tube tested 64 on our Paul Hart calibrated TV7 where minimum (65%) is 48. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE