@christianb5s4
I have not heard Parasound amps, but they have a very good reputation.
Honestly I can’t grade how much warmer the Pass Labs is, as I don’t have a reference as to what a 5 or 10 is. Also in keeping with the OP’s theme, I’d like to keep this to the preamps mentioned and what amps may work well. Also bear in mind that I can do one thing with my VAC Master preamp and that is to tube roll. I can roll in my Mullard 6922s, and I have a warm system.
I see that you have a Pass Labs preamp. Maybe you can match it with their amp. I’d reach out to Mark at Reno Hifi and ask him. Great guy, very knowledgeable and he knows the Pass lineup well. I purchased my X250.8 from him. He does have an in home audition program too. Perhaps you may want to change your preamp or speakers as options. You may also want to start a new thread with your questions with respect to your system.