Sylvania 15KY8 Vacuum Tube Valve NOS NIB ROC Biography It took two adapters but

It took two adapters but was worth it as they sounded fine in my Mini Mite 2013

Transconductance measured 56 for Tube One and 57 for Tube Two where minimum (65%) is 40

new in box US-made 17CT3 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 55 while Tube Two measured 62 where minimum is 34 and new is 60

though this headphone amp is not optimized for this tube type

Sylvania 15KY8 Vacuum Tube Valve NOS NIB ROC Biography It took two adapters butThis new old stock, new in box Sylvania 15KY8 tested to spec on our Paul Hart calibrated TV7 U. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE PROBABLY HAVE IT.