2 Raytheon 1AD4 Vacuum Tubes Tubes Unused Lot Of Two 8LT8 Nonal T20 I am playing it in

I am playing it in Bottlehead Crack headphone amplifier as a 12AU7 substitute and it sounds excellent

new in box RCA 6B10 tubes tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 38/38 for Tube One (CBS-labeled) and 38/42 for Tube Two where minimum (65%) is 32/32

They measured 53 (black glass)

Tube One measured 43 while Tube Two measured 58 were minimum (65%) is 36 and 100% is 55

2 Raytheon 1AD4 Vacuum Tubes Tubes Unused Lot Of Two 8LT8 Nonal T20 I am playing it inThese tubes appear unused as there is no evidence they have been touched by a soldering iron. That said, they are sold as is with no returns. 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