Matched Pair Hytron 6V6 6V6GT Black Plate Clear Bottle Vacuum Tubes T15 T55 Their internal structures are all

Their internal structures are all the same

It has double

new in box RCA 6BN4A tubes tested to spec on our Paul Hart-calibrated TV7/U

This trio of Westinghouse black plate 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair Hytron 6V6 6V6GT Black Plate Clear Bottle Vacuum Tubes T15 T55 Their internal structures are allThis matched pair of black plate Hytron 6V6GT output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Plate current measured 9. 7 milliamps and transconductance was 1510 micromhos for Tube One. Tube Two measured 10. 3 1180. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.) They have tall bases; shiny black plates