Matched Pair Tung-Sol 6K6 JAN-CTL-6K6GT Milspec Black Bottles Vacuum Tubes NOS-Testing

Matched Pair Tung-Sol 6K6 JAN-CTL-6K6GT Milspec Black Bottles Vacuum Tubes NOS-TestingThis new old stock TESTING matched pair of Tung Sol milspec JAN CTL 6K6GT tubes was tested on our Maxi Matcher 400 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas. Tube One drew 22. 7 milliamps' plate current and measured 1900 micromhos. Tube Two measured 24 1860. New nominal is within one standard deviation of 1900. These tubes have pretty black bottles that entirely cover the top half of

These tubes have top and side black / dark-gray bottles

Tube Three measured 76/76 where minimum (65%) is 50/50 and 100% is 77/77

These mesh plate Sylvania number 78 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

These three GE 6AY3B / 6BS3A tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One's gain was quite a bit lower and still should be useful if your amp has a balance control

It comes with a box

43 and 44 respectively

These tubes have black anode radiators for cooler operation and longer tube life

It sounds very good with light surface noise and the occasional click and pop

Noise: -86

This new old stock-testing matched pair of RCA 12B4 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This JJ low noise gold pin 12AX7 / ECC83S dual triode was tested on our Paul Hart-calibrated TV7/U for shorts