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The P10 does regulate voltage very well, mine regulates at a constant 120.3 volts, there are many features on the P10 that can be used to adjust phasing, low distortion, the Sine Wave, (Mulitwave adjustments and Cleanwave degaussing). These adjustments do affect and effect the results you hear of which I am pleased. There is definitely a noticeable fine decay in music with lingering tones, a clarity that is pleasing rather than over bearing. Have had mine over a year and picked it up because I was having issues with 60 cycle buzz and hum. This reduced the problem almost completely. The other actions that fully eliminated the hum and buzz were better placement of cables and interconnects as well upgrading some interconnects and Power cables as well as checking all connections starting with the last source added which was my turntable. I agree Paul M. Of PS Audio is great with help and getting back to questions in more than a timely manner.