Sylvania Black Plate 12BZ7 Vacuum Tube Valve NOS NIB For Your Univalve Or Bottlehead Opus 1 3 10 12 I have listened to them

I have listened to them in my Radio Craftsman RC-2 mono block amplifiers and they sounded excellent

Etsy will indicate how many are available in this Dutch Auction

These three US-made 6U7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

I am playing them in my Art Sound 805 mono blocks with Miles Davis' seminal "Midnight Blue" album and they sound terrific

please select “6” from the quantity box

Sylvania Black Plate 12BZ7 Vacuum Tube Valve NOS NIB For Your Univalve Or Bottlehead Opus 1 3 10 12 I have listened to themThis new old stock, new in box Sylvania 12BZ7 tube tested to spec on our TV7 U. It measured 25 23 where minimum (65%) is 18 18 and 100% is 28 28. It has black plates; an O getter; steel support rods and outstanding flashing. I have listened to it in my Bottlehead Crack headphone amplifier and it sounded great. 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