Don't waste money on the P1000. The PPP is much better. I never have good result with a lot of other line conditioners before while using with my powered 350W ATC speakers compare to straight to my dedicated 20A circuit.
With the Duet appeared 1.5 years ago, thing has changed. My ATC speakers can't live without the Duet any more. The mid and bass are much better than going straight to my dedicated circuit.
I just purchased a PPP to replace the Duet just for my ATC speakers. Same thing, just better than the Duet of course.
Good luck in selling your P1000.