Matched Pair General Electric GE 6SL7 6SL7GT Vacuum Tubes NOS NIB Columbia EMI Menin" by Mercury Living Presence

Menin" by Mercury Living Presence

Transconductance measured 33 for Tube One and 33 for Tube Two where minimum (65%) is 26

new in box RCA 6AV5 tubes tested to spec on our Paul Hart-calibrated TV7/U

This RCA Radiotron number / type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6SL7 6SL7GT Vacuum Tubes NOS NIB Columbia EMI Menin" by Mercury Living PresenceThis 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