Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes ECC81 TV7 new in box Zenith 6LT8

new in box Zenith 6LT8 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box RCA 12AJ6 tube tested to spec on our Paul Hart-calibrated TV7/U

It has a side

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

Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes ECC81 TV7 new in box Zenith 6LT8This 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