Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB 7375 7576 As you can see

As you can see

new in box RCA 14Q7 tubes tested to spec in our Jackson 648 Mutual Conductance tester

IF YOU FEAR DAMAGE OR LOSS OF A PARCEL IN TRANSIT

1 milliamps' plate current

51/50 and 51/51

Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB 7375 7576 As you can seeThis new old stock, new in box (For Tube One) matched pair of GE MANUFACTURED 6BL7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 49 50 for Tube One and 50 50 for Tube Two (RCA LABELED). where minimum (65%) is 25 25 and 100% is 38. 5 38. 5. They have O getters; copper support rods; great flashing; stout black plates; anode radiators for cooler