I have the 509x. it replaced a Parasound Halo "Hint". I can only compare it to the HINT. Caveat: I am not an analytical listener and haven't owned many high end amps.
In my room, with my ears it was an improvement. I hear better bass, improved soundstage and it makes music more enjoyable for me. I'd say it has compelling dynamics while imparting more of a mellow flow to the music (if that makes sense).
In my room, with my ears it was an improvement. I hear better bass, improved soundstage and it makes music more enjoyable for me. I'd say it has compelling dynamics while imparting more of a mellow flow to the music (if that makes sense).