Settings for PS Audio PowerPlant

I use PS3 and PS5 set at 116 volts.

I can't seem to hear a *x@# - &%$* difference when I switch modes. Except if I go too far down on the voltage.
Then I get a system shutdown, but 100 volts is for Japan, not here. My ML pre. won't take it.

Snooker,
does your ML equipment work with any multiwave settings? If I try anything but SIN ALL my ML37, ML360, ML380S and ML336 goes hay-wire!! Every display just shows error codes I have never seen before nor can I find them in the manuals. Shutting everything doewn then on again under PP sin brings all my equipment up and they works just fine.
I tried different multiwave settings but either one causes the problems.
Which settings work for you and what ML equipment do you use?

Gerd: the preamp is a 380S and it does not seem to be affected by anything except a drop in voltage. I have a PS300 supplying the preamp and a Meridian 508-24 CDP and the power supply for some Perpetual Technologies stuff I am playing with. The amp (Classe 401) is too big for the 300.

I've been all over the map on this one, as I'm sure anyone using a PowerPlant w/MW has been.
It depends on the music and the source (LP or CD).
My fave's are SS1, SS5 and SF8, occasionally PS2. I find SS1 to give the most natural sound, with extended hi-freq response. The others can work well on really 'processed' music.