Matched Pair Sylvania 6AU6 Vacuum Tubes NOS-Testing Compactron T08o anode radiators for cooler operation

anode radiators for cooler operation and longer tube life

This new old stock-testing Sylvania 12AV7 dual triode was tested on our Jackson for shorts

The GM-LABELED ones all have 312 Sylvania EIA codes

This is a double LP

Matched Pair Sylvania 6AU6 Vacuum Tubes NOS-Testing Compactron T08o anode radiators for cooler operationThis 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