General Electric GE 6AM4 Vacuum Tube Valve NOS NIB Coated Tung-Sol

General Electric GE 6AM4 Vacuum Tube Valve NOS NIB Coated Tung-SolThis new old stock, new in box GE 6AM4 tube tested to spec on our Paul Hart calibrated TV7 U. BECAUSE OF THE BIZARRE, INTRUSIVE, CRUEL 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.

new in box US-made 6S8GT tubes tested to spec on our Paul Hart-calibrated TV7/U

WE HAVE HAD A DOZEN LESS-THAN-FOUR-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

These four Sylvania 7Q7s tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 12K5 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box GE 22JR6 tubes tested to spec on our on our Jackson 648

new in box Amperex-MANUFACTURED mesh plate 5U9 / LCF201 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube Three: 20

respectively nominal is within a standard deviation of 1100

Transconductance measured 40

old-fashioned

new in box Zenith 6JH8 tubes tested to spec on our Paul Hart-calibrated TV7/U

nearly-perfectly-matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts