Matched Pair Ken-Rad 2C22 JANCKR2C22 7193 Vacuum Tubes Milspec Black Plate NOS NIB September 12 2024 This low noise JJ 12AX7

This low noise JJ 12AX7 / ECC83S dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

This pressing has lightly-moderate surface noise

Test results to follow

This new old-testing matched pair of Matsushita-MANUFACTURED 6AQ5A output tubes was tested on our Paul Hart-calibrated TV7/U for shorts

54/54 and 54/54 where minimum (65%) is 40/40

Matched Pair Ken-Rad 2C22 JANCKR2C22 7193 Vacuum Tubes Milspec Black Plate NOS NIB September 12 2024 This low noise JJ 12AX7This new old stock, new in box matched pair of Ken Rad JAN CKR 2C22 7193 milspec triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 48 while Tube Two measured 49 where minimum (65%) is 38 and 100% is 58. I have played them in my Radio Craftsmen RC 2 monoblocks (with adapters not included) and they sound outstanding. They are dead quiet when the CD player is muted