Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes Nagrania XL 0257 I have played it in

I have played it in my Schiit Audio Vali 2 headphone amplifier and it sounded great

Transconductance was 1530 for Tube One and 1430 for Tube Two where new/nominal is within one standard deviation of 1900

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

mesh plate number / type 77 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

CHINA IS AN EXCELLENT EXAMPLE

Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes Nagrania XL 0257 I have played it inThis nearly perfectly matched pair of GE 6SJ7s was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 46 for Tube One and 48 for Tube Two where minimum (65%) is 40. They have 1 43 188 5 and 3 52 188 5 date provenance codes, respectively. I am playing them as I write in my Musical Paradise MP 301 MK3 and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.