A very strong tube. 118/120+ on the BK747 (pictures). I’m happy to combine shipping on items.
Item Tag: ECC803S 12AX7
Vintage Radiotron Gold Pin ECC803S Tube Tests Excellent On Calibrated TV7-D/U
Beautiful vintage Radiotron ECC803S tube TV7 tested very good. Results in photos. Whereas on the TV7 tester a reading of 32/32 is the equivalent of 60% Gm, this tube tested 45/43.