I have a rather long history with PS Audio regenerators. The first, a P600, provided clean power but also functioned as a space heater due to inefficiency. A few years hence, PS had an engineering breakthrough allowing them to produce a regenerator (the Premier Power Plant) that ran much cooler due to increased efficiency and in a smaller case to boot. During the use of both of these earlier units, I could not run my power amplifier off them. They just couldn't handle that demand. Indeed, with my first PPP I did run my amp off it until the regenerator failed. After contacting PS, they sent me a new PPP but I now ran my Power amp off a PS Audio duet conditioner.
When I became aware of PS's trade-up program, I traded in my 2nd PPP for a P5 which is in current production. Important point:I had a few conversations with the tech. guys at PS prior to the P5 upgrade purchase. It became apparent, that there were numerous PPP failures and they were recommending all PPP users to upgrade to the P series. Why? Robustness of design and construction. PS had enough of a failure rate with the Chinese manufactured PPP that manufacturing for the new "P Series" had been moved to the PS's home in Boulder, CO.
I was assured that the P5 could easily handle my entire system with room to spare. Sure enough, I am using 34% of its capability with my amps and rest of system plugged in! It is coasting along and sounds like it as there is no detectable dynamic constriction,( an argument often cited against regenerators). Having the amp on regenerated power opens up the soundspace and provides great ebb and flow and clean sound...play your favorite jazz recording with well recorded cymbals. They sound brassy and you can detect whether the sticks are wood or plastic tipped. Same analysis can be done with guitar if you prefer.
If you are considering a PS regenerator, call PS and talk to their tech staff. They will answer any questions you pose. Another thing, go to the PS site to this link:
https://www.psaudio.com/ask-paul/ You can watch Paul McGowan's daily videos where he answer questions on all topics audio. Lots to learn there.
Hope this helps! Sorry this got so long. One more thing. Distortion coming into the P5 from my electric utility 2.4%THD. Power output from P5 after regeneration .1% THD.