Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes Valves NOS-Testing Matched Pair 6AX4 This matched pair of milspec

This matched pair of milspec Chatham Electronics 6H6 / JAN-CAHG-6H6-WGT tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This Amperex 8020 half-wave rectifier tube was tested on our Paul Hart-calibrated TV7/U

new in box (For Tube One) matched pair of Unitron 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

anode radiators

Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes Valves NOS-Testing Matched Pair 6AX4 This matched pair of milspecThis new old stock testing matched pair of Sylvania 6AU6A tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 74 for Tube One and 76 for Tube Two where minimum (65%) is 58. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with adapters, not included) with Aimee Mann's seminal "Magnolia" album and they sound terrific. These tubes