Matched Pair Sylvania 6BL7 6BL7GTA Vacuum Tubes Triple 3 Mica Black Plates

Matched Pair Sylvania 6BL7 6BL7GTA Vacuum Tubes Triple 3 Mica Black PlatesThis matched pair of Sylvania 6BL7GT dual triodes was tested on our TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 47 44 while Tube Two measured 48 43 where minimum (65%) is 25 25 and 100% is 38. 5 38. 5. These tubes have copper support rods; beefy black plates: three mica spacers for improved mechanical stability and low microphonics; top D getters and anode radiators for cooler operation and extended life.

This RCA 5V4G rectifier tube was tested on our Paul Hart-calibrated TV7/U

I have played it in one of my Radio Craftsman RC-2 monoblocks and it sounds outstanding

new in box United 6EB8 tubes tested to spec on our Paul Hart-calibrated TV7/U

This pair of new old stock

bacchanalian zeitgeist

This Super Air Castle number / type 30 tube tested 31 on our Paul Hart-calibrated TV7/U where minimum is 23 and 100% is 35

her positive spirit prevailed and she has become -- for me at least -- a model for dealing with adversity

Tube One measured 68/73 while Tube Two measured 72/76 where minimum (65%) is 56/56 and 100% is 87/87

Plate current draw was 29

new in box RCA 6U8A (ECF82 / 6AX8 / 5KD8 / 6KD8) pentode/triode was tested on our Paul Hart-calibrated TV7/U for shorts

There are six new old stock

Tube One measured 50/50 while Tube Two measured 49/54 where minimum (65%) is 25/25 and 100% is 38