Jea48 11-28-2017I would think it’s unlikely, Jim, but I suppose it’s a possibility. For example, perhaps the MultiWave circuitry is misbehaving and doing funny things with the AC waveform, even when it is supposedly not being used.
Al,
Is it possible the P5 is the problem? ... When the OP is using the P5 for the front equipment could the P5, because of some internal problem, be causing the sound problem?
In any event it’s easy enough to find out, as you suggested.
Also, another thing I would suggest that the OP do, if he already hasn’t, is to use the P5’s oscilloscope function to look at its incoming and outgoing AC waveforms. And see if either looks dramatically different than a sine wave.
Best regards,
-- Al