3 Sylvania 11KV8 Vacuum Tubes Valves NOS NIB Lot Of Three

3 Sylvania 11KV8 Vacuum Tubes Valves NOS NIB Lot Of ThreeThese three Sylvania 11KV8 tubes 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. PLEASE ALSO SEE

new in box RCA 6CX8 tubes tested to spec on our Paul Hart-calibrated TV7/U

52/34 and 56/47 where minimum (65%) is 40/45 and 100% is 62/69

Tube One: 72/78

68 and 68 where minimum (65%) is 40

I am playing them in my Musical Paradise MC-3 single-ended integrated amplifier as I write with Aimee Mann's seminal "Magnolia" album and it sounds terrific

2 milliamps

These four RCA and Cunningham number / type 27 tubes tested as low goodand good on our Paul Hart-calibrated TV7/U

WE HAVE HAD FEWER THAN A DOZEN LESS-THAN-FIVE-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE I REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER KNEW NOTHING ABOUT TUBE REBRANDING AND CLAIMED THAT SOMETHING MADE BY TUNG-SOL AND BRANDED BY EMERSON WAS MADE BY EMERSON

This lot of seven US-made 12B4A tubes were tested on our Paul Hart-calibrated TV7/U for shorts

It sounds excellent with only the very-occasional pop and tick in the quiet musical passages

balanced sections

These tubes have black anode radiators for cooler operation and longer tube life