FYI, I was told that the transformer boards on the P300 had a batch(s) with reversed wires on the transformer board which resulted in a switch between the neutral and line(hot) and subsequently out of phase with increased AC polarity. I checked this and low and behold, on my unit it was true. I popped the bottom, switched the neutral and line, and VOILA, no more boomy bass, better imaging and soundstaging, etc. I thought this was BS. I stand corrected, phase is important. Those of you with P300's may want to check, it made a not so subtle difference in my system.
