I am hoping the audiophile community can help me out. My father recently passed and we are looking to rehome his equipment. He has a P600 Multiwave and I am trying to find out more information about it. Is there a non-multiwave version? What IS multiwave? He had mentioned before that when he had a CD player plugged into it, he could sometimes hear the audio levels fluctuate. I wasn’t there to actually see exactly what he was talking about. Could this be an actual problem with the Power Plant or a settings issue? How much are one of these worth?