2 RCA 12SH7 JANCRC12SH7 VT288 Vacuum Tubes Valves Milspec NOS NIB Lot Of Two

2 RCA 12SH7 JANCRC12SH7 VT288 Vacuum Tubes Valves Milspec NOS NIB Lot Of TwoThese two milspec RCA 12SH7 JAN CRC 12SH7 VT 288 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 $250

This tube has black plates

These two Zenith 6U7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

new in box US-Made 21GY5 tubes tested to spec on our on our Jackson 648

5 inches in circumference

These tubes were selected by Baldwin Organ for musicality and clarity

74 and 78 where minimum (65%) is 58

new in box RCA-MANUFACTURED

This matched pair of Hytron black glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

New / nominal transconductance is within one standard deviation of 1900

and bright

perfectly-balanced 70/70 where minimum (65%) is 50/50 and 100% is 77/77

54/54 and 54/54 where minimum (65%) is 40/40 and 100% is 62/62