2 General Electric GE 6JF6 Vacuum Tubes Valves NOS NIB Lot Of Two

2 General Electric GE 6JF6 Vacuum Tubes Valves NOS NIB Lot Of TwoThese two new old stock, new in box GE 6JF6 tubes tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO

It is dead quiet when the preamp is muted and has excellent frequency response and sound-staging

4 milliamps for Tube One and 2740/38

50/50 and 51/51

I just cleaned this LP on our VPI 16

new in box 12F5GT tubes tested to spec on our Paul Hart-calibrated TV7/U

What makes this funny is that a major US defense contractor likely committed a number of felonies by smuggling communist Soviet tubes into the US at the height of the Cold War

Transconductance was 1890 for Tube One and 2000 for Tube Two where new/nominal is within one standard deviation of 1900

Tube One measured 31 while Tube Two measured 32 where minimum (65%) is 22

new in box GE 12FX8A tubes tested to spec on our Paul Hart-calibrated TV7/U

straight-bottle bottle variety

7 for Tube Two

new in box matched pair of Sylvania gray glass 7C5 tubse was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts