3 US-Made 6CM7 Vacuum Tubes NOS NIB Lot Of Three Stevens

3 US-Made 6CM7 Vacuum Tubes NOS NIB Lot Of Three StevensThese three new old stock, new in box US made 6CM7 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

This lot of seven new old stock

It measured an almost- perfectly-balanced 76/77 where minimum (65%) is 56/56

4 dB / -85 dB (-92 dB is the Maxi-Matcher's noise floor)

This matched pair of OTK-MANUFACTURED black glass 6V6GT output tubes was tested on our Maxi-Matcher 2 for shorts

This RCA Radiotron type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

The four new old stock

These seven US-made 6B7 tubes tested as follows on our Paul Hart-calibrated TV7/U:

One is an early 1X2

(New US-made 6AU6s typically test within one standard deviation of 2300 micromhos

It tested 68 in Section One and 58 in Section Two where minimum (65%) is 40/40 and 100% is 62/62

I have played it in one of my Radio Craftsmen RC-2 monoblocks (with an adapter

This pressing has no scratches and light surface noise discernable only in quiet passages