Author Topic: GM70 Amps  (Read 937 times)

paulAdmin

GM70 Amps
« on: December 08, 2016, 06:18:01 AM »





« Last Edit: December 08, 2016, 06:19:52 AM by paulAdmin »

fallsaudio

Re: GM70 Amps
« Reply #1 on: December 14, 2016, 10:26:35 PM »
 :) These picture are of the amplifiers in its early stages . I was not happy with fixed bias so I have changed to cathode bias . And have got rid of the DC filament . And now they are really starting to sing.Still a bit more fiddling . Keep you posted