2 US-Made 6CZ5 Vacuum Tubes Lot Of Two Symphony 3 Eroica I played them with adapters

I played them with adapters (not included) in my Radio Craftsmen RC-2 monoblocks and they sounded great even though they test on the cusp

Transconductance measured (From left to right): 36

It measured an outstanding 28 where minimum (65%) is 13

67 and 74 where minimum (65%) is 53

I just read the liner notes and I was right about this album sounding 15-20 years ahead of its time as it was

2 US-Made 6CZ5 Vacuum Tubes Lot Of Two Symphony 3 Eroica I played them with adaptersThis pair of US made, black plate 6CZ5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They measured 85 and 75, respectively, where minimum (65%) is 60. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT