Amps In Wall Or Conditioner?

"Love the Niagara 1200 paired with an AudioQuest Tornado power cord. Compared it to a Puritan 156, and sold the Puritan."

The Puritan has a series inductor in the AC supply to every outlet and can, under certain conditions such as dynamic (changing) current demands of Class A/B power amps, result in "current-starving" with a loss of dynamics and bass impact. Simply put, inductors oppose changes in current flow. Audioquest avoids this problem in the Niagra 1200 by using NO filters in the high-current (HC) outlets.

"No current starving on ANY amp I put on the Puritan. Puritan advertises the same thing. I have put a 400 watt class A/B amp on it. A 55 watt pure class A amp on it……you get the idea. Always sounded better than plugging into my upgraded audiophile wall outlet as part of a dedicated 20 amp circuit isolated from the rest of the home’s electrical. That is my experience in my home..."

I have every reason to believe that your experience is as described. Class A amps have a relatively constant current demand, so a series inductor in the AC feed does not pose a problem. The same holds true for a heavily-biased Class A/B amp such as your Coda which runs Class A for the first 20 watts if moderate SPL is in play.

The series inductor becomes a problem, however, when a lightly-biased Class A/B amp is driven at high levels. A loss in dynamics and bass impact will result and may be what tvad experienced. This is the very reason why Audioquest and Furman use energy-storage technology in their pricier power conditioners.