RCA 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit GM Delco Transconductance measured 67 in Section

Transconductance measured 67 in Section One and 65 in Section Two for Tube One and 67/69 in Tube Two where minimum (65%) is 50/50 and 100% is 77/77

O getter and excellent flashing

They measured 52

I just cleaned this LP on my VPI 16

It tests below the cusp

RCA 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit GM Delco Transconductance measured 67 in SectionThis new old stock, new in box RCA 6BK7B tube tested to spec on our Paul Hart calibrated TV7 U. I have played it in my Schiit Audio Vali 2 headphone amplifier and it sounded great. This variety has gray, winged plates with one rectangular hole per plate; copper support rods; shields between triodes to eliminate crosstalk; great flashing and goal post getters. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO