@dwcda nice! Thanks for the update.
So the most surprising first - you couldn’t tell that the Puritan was in your system. That’s a 180 degrees from my experience with it. Is it the PSM156?
In my system with PSM156, using 3 different power cables feeding it, it restricted dynamics, sweetened and mellowed out the presentation to the degree I couldn’t live with it. I tried their Ultimate cable and didn’t like it - brittle up top, thinner sounding although with higher res than the Classic. Running amps into Puritan was garbage. Even the dac and preamp sounded pinched. I’m exaggerating for illustration purposes but you get the idea. I sold it and don’t miss it one bit. Direct on dedicated line now. Some people love this power conditioner, I didn’t.
Second part…the loud sub. That’s potentially the culprit. Bass that’s overpowering is going to overwhelm the entire presentation. I would be testing every change in the system with the sub off. But it’s your system you do what you like. However, like I said, sub will null subtle changes. You’re going to probably tell me I’m looking for way to justify hearing the change but that’s how it is.
The fact that both of you heard power cables make a difference is cool. And that again comes down to the degree of improvement, if any. Is it worth it to you? Going back to original configuration, you would know if you can’t live without that cable you just heard. If this feeling isn’t there, move on.
That’s my take on it. And I’m looking to hear @mclinnguy thoughts on what he heard.