I agree with what's been said. I've heard it a few times using analog inputs, digital inputs, and as a DAC and tuner. Performed admirably every way and every time.
Some people have had issues getting the streaming right. They've mainly been iTunes users. It won't stream Apple codec files, so be careful if that's what you plan on using. I suspect the ones who've had issues didn't consult with their dealer to get things right, and just posted questions on a few forums.
Make sure you pair it up with the right speakers. Naim's 30 watts are conservatively rated, but it's not going to drive Maggies in a large room to loud levels.
I haven't heard Harbeths connected to one, but that combo should be fantastic. A lot of Naim guys like the combo. I just wish my Naim dealer would demo it with more than the Naim N-Sat. They're s fun and engaging speaker, but they're too wall of sound and 2 dimentional for me. I've tried to warm up to them, but I lose interest after about an hour or so every time.