3 US-Made 7F7 Vacuum Tubes Lot Of Three Stereo PPSD-98009 This tube has great bass

This tube has great bass and sparkling highs and Mann's voice is warm and clear as a bell

(New US-made 6V6s typically test with plate current from the mid-teens to mid 30s with transconductance from 2300 micromhos or so

They are somewhat microphonic

They have Y5E and 9-22 codes

Transconductance measured 42/31 for Tube One and 44/31 for Tube Two where minimum (65%) is 30/15

3 US-Made 7F7 Vacuum Tubes Lot Of Three Stereo PPSD-98009 This tube has great bassThis lot of three US made 7F7 tubes was tested on our Paul Hart calibrated TV7 U and measure as follows: 40 31, 42 44 and 45 46 where minimum (65%) is 33 33 and 100% is 51 51. 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