Does an Audioquest Niagra 1200 limit amplifier dynamics?

@hilde45 my PS Audio P10 would show me the oscilloscope on its screen to show how much distortion was on the line. I had a low noise, but it still made my system sound cleaner. I moved to a Shunyata Denali and it's even better, but I did lose the oscilloscope which was always fun to check out what harm fans, air conditioners and vacuuming did to the line. 

The 1200 is OK, but as above, the Puritan PSM156 is much better, its certainly better than the Niagara 3000

I just bought the Niagara 1200 , My art audio concierto amp is connected on the high current section, Dynamics and noise floor improve. In my system I don’t sense the power is  affected at all.

@j-wall Very helpful. I could get the PS Audio on trial, but it would be nice to measure first before laying down thousands. 

I just completed a test with my Niagara 1200. I did not detect a difference in the quality of music when I connected my Luxman 590 AX II Integrated into the Niagara 1200 High Current outlets vs the other outlets on the Niagara 1200, vs my dedicated 20 amp wall outlet. I have not owned or auditioned it but I agree with markiew ((above), the Puritan Audio PSM 156 could be the answer to several issues that others are having.