As I remember, either the early manual or some of the early website copy for the P10 recommended using a Soloist before the P10 (I no longer have a P10, so don’t have any of those manuals anymore). As my 1st P10 was incoming, I got a Soloist and installed it next to my existing outlet, which while is not on a dedicated line, is a line with little else on it.
I went back and forth between the Soloist and direct outlet several times and always preferred the direct outlet.
I now run a P15 there, I haven’t re-tried the comparison since.
There is a thread here on power conditioning before a PS Powerplant:
I posted some additional comments on my experiences there.
Best to you. I found the P10s invaluable in my systems and that is what drove me to upgrade to the P15s.
Greg in Mississippi
P.S. I ran dedicated lines to my audio system in a house I owned back in the 1990s. When I did that, it was as if I had replaced my gear with pieces that cost 2-3x more. It was an ear-opening experience and I’ve been a big fan of ensuring one gets good AC power into your gear ever since… in-wall wiring, outlets, power conditioning (of which the PS Regenerators are unique and un-paralleled, in my experience), power cables and their connections, and yes, even fuses. IMHO, they all make a difference. And that is why I have 2 P15s here, which along with my 2 BHK-250s are the most expensive pieces in my systems… and each is worth every penny! AND when I can arrange to run dedicated lines here, I will do so as I expect that will multiply the improvements I’ve gotten with the regenerators.