Matched Pair General Electric GE 6SL7 6SL7GT Vacuum Tubes NOS NIB Columbia EMI great flashing

great flashing

The pressing is quite good with a few pops and crackles and I would give it a 7-7

an anode radiator for cooler operation and longer tube life and a banded-cross top mica spacer

new in box Philco 6BS8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Menin" by Mercury Living Presence

Matched Pair General Electric GE 6SL7 6SL7GT Vacuum Tubes NOS NIB Columbia EMI great flashingThis matched pair of new old stock, new in box (For Tube One) GE 6SL7GT dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 45 38 while Tube Two measured 42 41 where minimum (65%) is 32 32 49 49. They have steel plates; steel support rods; 59 43 188 5 and 5 48 188 5 date provenance codes; solid top mica spacers; side harp getters; tall bases; medium bottles and