Nice pair of Philco ST ’45 triodes. Tested in the old tester. Also sounded great in my 45SE amplifier running 270VDC on plates with 1500 ohm cathode resistor.
Nice pair of Philco ST ’45 triodes. Tested in the old tester. Also sounded great in my 45SE amplifier running 270VDC on plates with 1500 ohm cathode resistor.