Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Life Beyond Earth I am playing them in

I am playing them in my ArtSound single-ended 805 monoblocks with Steely Dan’s seminal "Aja" album

They have dimpled

new in box GE 6EW6 tubes tested to spec on our Paul Hart-calibrated TV7/U

It has a large logo and an SC 278 A US Army Signal Corps contract code

This lot of GE black plate 6CL6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Life Beyond Earth I am playing them inThis West German Amperex MANUFACTURED, RCA LABELED ECC189 6ES8 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 60 50 where minimum (65%) is 50 50 and 100% is 77 77. This tube has steel support rods; an O getter IX =53 and matte gray plates. As I write, I am playing Pink Floyd's Green Is The Colour" in my Schiit Audio Vali 2 headphone amplifier and it sounds