01-05-2023, 08:00 PM
One easy way to improve the low range, and probably the mid range to, is to install a cathode bypass capacitor in parallel with the cathode resistor of the power output tube, something around 22-33 uf 25vdc, but value isn't that critical. I've often done this with sets that exclude them and it really boosts the performance.
Regards
Arran
Regards
Arran