Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB new in box Raytheon 6BC7

new in box Raytheon 6BC7 tubes tested to spec on our Paul Hart-calibrated TV7/U

WE HAVE SCORES OF THOUSANDS OF VINTAGE ELECTRONIC PARTS

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

9 milliamps where new 6L6GCs typically test with plate current from the low 20s to mid 30s and transconductance from 2200 micromhos or so

but should work fine

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB new in box Raytheon 6BC7This 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