@jeffreyw I’ll start with saying I’m happy for you and I don’t mean to rain on your parade but…
I used to have PSM156 which is a higher model than the 136 you replaced with Shunyata. Going direct to wall after I installed two dedicated lines was a massive improvement over using Puritan for all of my components.
If you had your amps plugged into PSM136 then you choked them. Even source components were choked by the 156 in my system (reduced dynamics, collapsed soundstage) - I always had amps plugged into wall. So going to a passive conditioner like the Shunyata you’ve experienced an enormous upgrade. I completely understand. Add to that the top of the line power cable. I used to have the older Shunyata Hydra 4 and it worked well. Shunyata makes excellent power products. Enjoy!!!