Hi Chris,
yes, I have reduced the input to the phono preamp so as to have the output signal not clipped in the whole band from 20 Hz to 20 kHz (seen on oscilloscope).
With my friends we have made several phono preamps both tube and solid state. No problem with solid state preamps (fet or low noise opamps), while with tube ones they are fine, but it is very difficult to eliminate the hum at the mains frequency (50 Hz) that is heard especially when the turntable arm is raised from the vinile disc.
-- Cheers
? ? Attilio
Attilio