Philco Star Light 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit 50L6GT Black Plate

Philco Star Light 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit 50L6GT Black PlateThis new old stock, new in box Philco Star Light 6BK7B tubes tested to spec on our Paul Hart calibrated TV7 U. I have played it in my Schiit Audio Vali 2 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 OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT

Both measured 54 were minimum (65%) is 36 and 100% is 55

new in box Cunningham 35/51 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Tung-Sol 6SD7GT pentode tested to spec on our Paul Hart-calibrated TV7/U

OEM-BRANDED black glass 6K6GT tubes were tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts and tested as follows:

Three are milspec (one is a JAN-CRC-6AB7Y)

Too bad about the album cover

new in box Italian Sylvania 12SN7GTA dual triode was tested on our Hickok 600A for shorts

This Sylvania-MANUFACTURED- Coronado-LABELED 71A tested 46 on our Paul Hart-calibrated TV7/U where new/nominal is 42

Tube One (12B4

Johnson porcelain

There were many pops and ticks

crenelated