Philips 6ES8 ECC189 Vacuum Tube A Frame Riveted / Dimple Disk Getter Sutured Top NOS NIB Pete Fountain new in box matched pair

new in box matched pair of GE-MANUFACTURED 6FQ7 / 6CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box (For Tube Two) matched pair of GE 6FQ7 / 6CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

The title basically says it all

They tested as follows: 66/38

Tube Two is a bit microphonic and it is therefore recommended that this matched pair not be used in areas with excessive vibration

Philips 6ES8 ECC189 Vacuum Tube A Frame Riveted / Dimple Disk Getter Sutured Top NOS NIB Pete Fountain new in box matched pairThis new old stock, new in box Philips MADE, RCA BRANDED 6ES8 ECC189 tested to spec on our Paul Hart calibrated TV7 U. This tube has beautiful, crisp orange lettering; a sutured top, a riveted disk getter; A frame construction and 1Xb ^2d date provenance codes, respectively, meaning it was made at the Philips plant in Heerlen, Limburg Province, The Netherlands. I have played it in my Schiit Audio Vali 2 headphone amplifier and it sounded great. WE