Sylvania Black Plate 12BZ7 Vacuum Tube NOS NIB For Your Univalve Or Bottlehead October 07 2023 There are two GEs

There are two GEs

These six 12BY7 / 12BY7A / 12BV7 tubes tested as follows on our Paul Hart-calibrated TV7/U where minimum (65%) is 46:

67 and 74 where minimum (65%) is 53

5 record cleaner and then played it on my solid state rig which consists of a Rega Planar Three with an Ortofon X5-MC cartridge on an RB-300 tone arm with an Adcom GFP-555 II preamp feeding a Hafler SE240 power amplifier and PSB Alpha near-field monitors

This lot of three Arcturus 6L7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Sylvania Black Plate 12BZ7 Vacuum Tube NOS NIB For Your Univalve Or Bottlehead October 07 2023 There are two GEsThis 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