As I write this, I'm listening to the pipe organs on Pipes Rhode Island (CD, Riago CD 101), and this player has bottom-end muscle. But more than that, the 650D is essentially free of glare and grain on top, while exhibiting exceptional transparency and transient clarity. It also managed sweetness and delicacy without sounding soft or mushy. The 650D made CDs and CD-resolution files sound about as good as I've heard them sound here, while its decoding of hi-rez files produced exceptional soundstage width and depth combined with analog-like imaging.
I loved Simaudio's Moon Evolution 650D. Ignore the somewhat less than appealing industrial design and go directly to the sound, and I think you'll love it as much as I do.