The more I listen to this little guy the more I like it. The DAC section has a very nice blend of detail and refinement, which is a trait I've heard in other Bel Canto gear. The headphone amp is a highlight for me, I do a lot of headphone listening on hard to drive cans and this is the best sound I've heard short of a high end dedicated head amp.
The speaker amp section sounds good with my Gallo Strada's, nice imaging, no digital grain. I'd prefer a wider soundstage but what is there is well defined in width with some depth. The digital volume control works great for me, and I don't hear any problems at low volumes. It is also the quietest piece of gear I've ever heard with no audible noisefloor at any volume. The pitch blackness of musical space really is quite eerie at times.
The optical inputs work well with my airport express with no jitter related dropouts I've experienced on other DAC's so whatever reclocking solution they use works well. The USB input sounds particularly good, and is driverless to 24/96 on my Macbook Pro. I haven't had a chance to try the phono preamp as I sold my table to fund the C5i but I'll be in the market for a new table eventually so it's nice to have. I also haven't tried the one analog input but was pleased to see it could be configured for home theater passthrough.
So far I'm very happy and I'd recommend it as an ideal integrated solution for digital sources, especially if you don't need built in UPnP/DLNA streaming support. I upgraded from a Peachtree Decco and the Bel Canto sounds much more accurate to me while retaining lots of musicality. The build quality appears to be miles ahead of the Decco as well.