I've been using PM for a few weeks an like it a lot. I did not notice a huge improvement in sound, though. Perhaps some improvement, but not huge (Amarra didn't do much for me either.) (Equipment: dedicated 4GB Mac Mini, Ayre QB-9 DAC, Parasound Halo A51 Amp, Focal 1007 Be speakers.)
What I like is the crossover and ability to use plugins. I run PM's crossover at 80Hz into an EQ plugin that I use to tame my room modes. I run two DACs: the high-pass output goes to the QB-9 and my Focals, the EQ'ed low-pass goes to an HRT Music Streamer II and on to my subwoofers. I have a subtle EQ on the high-pass channel, too. The crossover lets you set the level and delay of each channel to maximize the integration of the mains and subs. It's pretty slick, and all done in software (where it should be). The PM crossover sounds very transparent, but you could also use a plugin (there are hundreds). I use Blue Cat Audio's Parametr'EQ plugin for my EQ.
(Disclaimer: I am not in any way affiliated with any of the companies mentioned.)
What I like is the crossover and ability to use plugins. I run PM's crossover at 80Hz into an EQ plugin that I use to tame my room modes. I run two DACs: the high-pass output goes to the QB-9 and my Focals, the EQ'ed low-pass goes to an HRT Music Streamer II and on to my subwoofers. I have a subtle EQ on the high-pass channel, too. The crossover lets you set the level and delay of each channel to maximize the integration of the mains and subs. It's pretty slick, and all done in software (where it should be). The PM crossover sounds very transparent, but you could also use a plugin (there are hundreds). I use Blue Cat Audio's Parametr'EQ plugin for my EQ.
(Disclaimer: I am not in any way affiliated with any of the companies mentioned.)