Philco Star Light 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit 50L6GT Black Plate new in box Tung-Sol 6SD7GT

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

Johnson porcelain

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

Tube One (12B4

Philco Star Light 6BK7 6BK7B Vacuum Tube Valve NOS NIB For Your Schiit 50L6GT Black Plate new in box Tung-Sol 6SD7GTThis 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