Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes ECC81 TV7 It measured an outstanding and

It measured an outstanding and nearly-perfectly-balanced 92/93 where minimum (65%) is 50/50 and 100% is 77/77

It has a side

The Bottlehead calls for a 12AU7 which is a pretty-different tube

Tube Two: 46/48

US-made 5BQ7A tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes ECC81 TV7 It measured an outstanding andThis matched pair of Sylvania 6AU6A tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 66 for Tube One and 70 for Tube Two where minimum (65%) is 58. These tubes have top, O getters; gray plates and excellent flashing. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with adapters, not included) with Aimee Mann's seminal