Matched Pair Sylvania 6AU6 Vacuum Tubes Valves NOS-Testing 6AC7 Octal OM2 Zenith-LABELED 6C8G dual triode was

Zenith-LABELED 6C8G dual triode was tested on our Paul Hart-calibrated for shorts

I am playing it it in my Bottlehead Crack headphone amplifier as I write and it sounds great

large top and small bottom mica spacers and excellent flashing

This lot of four North American-made number 78 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in stock GE set of seven pin tubes to re-tube your All American Five set

Matched Pair Sylvania 6AU6 Vacuum Tubes Valves NOS-Testing 6AC7 Octal OM2 Zenith-LABELED 6C8G dual triode wasThis new old stock testing matched pair of Sylvania 6AU6 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 85 for Tube One and 86 for Tube Two where minimum (65%) is 58. These tubes have top, U getters; gray plates and excellent flashing. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with adapters, not included) with Aimee