Raytheon 12K7 12K7GT Vacuum Tube NOS NIB Matched Pair 6CG7 It is in pretty good

It is in pretty good shape with light-to moderate surface noise (pops and ticks) and no scratches

Transconductance was 1240 for Tube One and 1380 for Tube Two where new/nominal is within one standard deviation of 1900

I have played it in my Musical Paradise 301 MK 3 and it sounds excellent -- airy with excellent dynamics and signal bandwidth

This almost-perfectly-matched pair of Sylvania black plate 6C4 triodes was tested on our Paul Hart-calibrated TV7/U for shorts

but still usable especially in experimental situations where the tube might be damaged -- on our Paul Hart-calibrated TV7/U

Raytheon 12K7 12K7GT Vacuum Tube NOS NIB Matched Pair 6CG7 It is in pretty goodThis lot of two new old stock, new in box US made 12K7GT 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