- Matawan, New Jersey, United States
- Jun 15th
2 Vintage Sylvania 12AZ7 A Stereo Tubes ***** Tested on our new proprietary tester , the E3444 Triplett/Westmore 501 : It's a Triplett 3444 / Westmore 501 that has been enhanced. This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures. Filament voltage is al