Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes Valves NOS NIB Princeton University I can't tell you how

I can't tell you how they sound as we don't have any equipment that runs them

Tube One (Philco-LABELED

hanging filaments

Source material is The Beatles "Yellow Submarine Songbook" and they sound terrific

Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes Valves NOS NIB Princeton University I can't tell you howThis new old stock, new in box matched pair of GE 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 56 56 for Tube One and 58 58 for Tube Two where minimum (65%) is 25 25 and 100% is 38. 5 38. 5. They have chamfered top O getters; steel support rods; great flashing; stout gray plates; anode radiators for cooler operation and longer life and