New amps in the house. A couple of Nagra HD.
Hooked them up to my p20. Load about 50%.
But when I turn the amp on, I hear like a ‘cricket’ noise from the p20. Another analogy is the sound made by old hard disks when on high read/write load.
Noise gets worse if I turn to sine wave. Also, worse if I change the phase setting, tuning to more ‘extreme’ phase settings.
Lowest noise is on multi wave 6 and phase zero.
Music plays fine.