Matched Pair National Union NU 6J7 6J7GT Vacuum Tubes Valves Glass Bottles Tung-Sol Gebraucht generous flashing and an anode

generous flashing and an anode radiator for cooler operation and longer life

Plate current measured 20

PLEASE BE PATIENT FOR THE FIRST DAY OR TWO IF THE PACKAGE IS STILL MARKED AS "PRE-TRANSIT

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

It has perforated plates

Matched Pair National Union NU 6J7 6J7GT Vacuum Tubes Valves Glass Bottles Tung-Sol Gebraucht generous flashing and an anodeThis matched pair of National Union glass bottle 6J7GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 42 while Tube Two measured 42 as well where minimum (65%) is 31. I have played them in my Musical Paradise 301 MK 3 with adapters (not included) as 6SJ7 substitutes and they sound excellent airy with excellent dynamics and signal bandwidth. They are a tad