Matched Pair RCA 12SN7 12SN7GT Vacuum Tubes RCA 6JH6 NOS NIB but I don't have any

but I don't have any equipment that uses these

These three Sylvania 2AF4A tubes tested to spec on our Paul Hart-calibrated TV7/U

Plate current draw was 19

5 record cleaner and then played it on my solid Rega Planar Three

25 and 26 where minimum (65%) is 21

Matched Pair RCA 12SN7 12SN7GT Vacuum Tubes RCA 6JH6 NOS NIB but I don't have anyThis matched pair of RCA 12SN7GT dual triodes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 63 64 for Tube One and 66 60 for Tube Two. Minimum (65%) is 50. They have black plates; tall bases; D getters; steel support rods and KR and MC date codes, respectively. I am playing them as I write in my Radio Craftsmen RC 2 monoblocks with RCA Living Stereo's CD of