5 Sylvania 25Z5 Vacuum Tubes Valves NOS NIB Shoulder ST-Shape Lot Of Five 17BZ3 T18 " WE SHIP THE DAY

" WE SHIP THE DAY AFTER THE SALE IF THE SALE WAS AFTER 9:30 AM EASTERN TIME

Plates: black ladder plate

44 and 45 where minimum is (65%) is 36 and 100% is 55

not included) with Aimee Mann's seminal "Magnolia" album and they sound terrific

5 Sylvania 25Z5 Vacuum Tubes Valves NOS NIB Shoulder ST-Shape Lot Of Five 17BZ3 T18 " WE SHIP THE DAYThis lot of five new old stock, new in box Sylvania 25Z5 tubes tested to spec on our Paul Hart calibrated TV7 U. One is milspec. This new old stock, new in box matched pair of GE 6FQ7 6CG7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 80 80 while Tube Two measured 82 84 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have copper support rods;