Arcturus Number / Type 76 #76 Vacuum Tube Valve March 30 2024 new in box RCA 6GF7

new in box RCA 6GF7 / 6GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

Both tubes have gray

It sounds very good with an occasional pop and tick audible in the pianissimo passages

It rattles but is otherwise OK

(New EL84s typically test from the mid 20s to mid 60s with transconductance from 7420

Arcturus Number / Type 76 #76 Vacuum Tube Valve March 30 2024 new in box RCA 6GF7This Arcturus type 76 triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 46 where minimum (65%) is 36 and 100% is 55. It has shiny gray rounded plates; a top, banded, rectangular mica spacer as well as a rectangular bottom spacer, mica snubbers for increased rigidity and lowered microphonics and excellent flashing. I have played it in one of my Radio