2 US-Made Type / Number 58 #58 Vacuum Tubes Valves NOS NIB Lot Of Two Music School EP Transconductance measured 44 and 44

Transconductance measured 44 and 44 where minimum (65%) is 35

new in box US-made 6W6GT tubes tested to spec on our Paul Hart-calibrated TV7/U

This lot of eight new old stock

It measured 36/39 where minimum (65%) is 18/18 and 100% is 28/28

2 US-Made Type / Number 58 #58 Vacuum Tubes Valves NOS NIB Lot Of Two Music School EP Transconductance measured 44 and 44This lot of two new old stock, new in box US made number type 58 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