Matched Pair General Electric GE 6AU6 6AU6A Vacuum Tubes Geprueft RC2 RC-2 I am playing them one

I am playing them one at a time using a 6C4 to 6J5 adapter in one of my RC-2 monoblocks with Super Furry Animals' "Radiator" and they sound excellent

new in box RCA 6KD6 tube -- and two just like it -- tested to spec on our Paul Hart-calibrated TV7/U

Plates: gray ladder plate

I can't tell you how they sound as we don't have any equipment that runs them

These tubes have tall bases

Matched Pair General Electric GE 6AU6 6AU6A Vacuum Tubes Geprueft RC2 RC-2 I am playing them oneThis matched pair of GE 6AU6A tubes was tested on our Paul Hart calibrated TV7 U tube tester for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 67 while Tube Two measured 69 where minimum (65%) is 58. I have played them in my Musical Paradise 301 MK 3 with adapters (not included) as 6SJ7 substitutes and they sound excellent airy with excellent dynamics and signal bandwidth. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.