Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates GM-Delco-BRANDED 6AX8 tubes tested to

GM-Delco-BRANDED 6AX8 tubes tested to spec on our Paul Hart-calibrated TV7/U

52 and 59 respectively

This matched pair of Sylvania 6BL7GT dual triodes was tested on our TV7/U for shorts

Transconductance measured 49/49 where minimum (65%) is 36/36

72 and 88 where minimum (65%) is 33 and 100% is 50

Matched Pair Unitron 6AK5 5654 6J1 6J2 Vacuum Tubes NOS NIB RCA Steel Plates GM-Delco-BRANDED 6AX8 tubes tested toThis new old stock, new in box (For Tube One) matched pair of Unitron 6AK5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One (Unitron 5654 LABELED, likely Tung Sol MANUFACTURED) measured 31 while Tube Two (no silkscreening 6AK5 LABELED, likely Tung Sol MANUFACTURED) measured 33 where minimum (65%) is 22. Both tubes are the same on the inside with