I also have my P1s paired with the Q1, and it sounds fantastic on high gain with the bass boost turned on (or with it off). It's not portable, but I've also tried with the Bravo V1 and it sounds good. I was beginning to think the P1s sound good with anything, but I just got an XDuoo XD-05 because of good reviews, and my initial impressions aren't as good as the others (the amp, not the P1s). The highs are on the verge of shrill, but I'm hoping that mellows out (or I may have to change the opamps). My bigger concern is digital noise between songs and at the start of songs.
But yes -- the Q1 sounds awesome with the P1s.
But yes -- the Q1 sounds awesome with the P1s.