I'm using an Apple AirPort Express Base Station, this is a wi-fi bridge which connects to the MC200 via ethernet. It plugs in to the mains but doesn't stream through it. I believe a newer model is required (client/non client) . I can't hear a difference between that and hardwired but I'm "only" using DSP3200s. Sounds fantastic to me (can't wait for some updates though, that's why it's wired right? Not holding my breath though...).

Cheers Tintin