Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB new in box US-made 8BA11

new in box US-made 8BA11 tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 60/60 where minimum (65%) is 40/40 and 100% is 62/62

top chamfered solid-O getters and two additional vertical support rods for increased rigidity and lowered microphonics

These tubes have great bass and sparkling highs and Mann's voice is warm and clear as a bell

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB new in box US-made 8BA11This matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 67 64 for Tube One and 71 69 for Tube Two where minimum (65%) is 50 50. They have tall bases; side horseshoe getters; copper support rods and great flashing. I have played them in my Radio Craftsmen RC 2 monoblocks and they sound great. They are dead quiet when the volume