Siemens 6AQ8 ECC85 Vacuum Tube 6KY8 TA1 These four US-made type /

These four US-made type / number 41 tubes tested as follows on our Paul Hart-calibrated TV7/U:

I am playing them in my Musical Paradise MP-301 MK3 as I write and they sound excellent

(New US-made 6V6s typically test with plate current from the mid- teens to mid 30s with transconductance from 2300 micromhos or so

4 (New/nominal according to M-M is 50/50 for this tube's cousin

Siemens 6AQ8 ECC85 Vacuum Tube 6KY8 TA1 These four US-made type /This Siemens MANUFACTURED, RCA BRANDED 6AQ8 ECC85 tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 64 72 where minimum (65%) is 50 50 and 100% is 77 77. I have played it in my Schiit Vali 2 headphone amp and it sounds great. It has a sutured top, copper support rods and a 1U7 6H date provenance code. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY