NAD greatly impressed me with their M51 bitstream DAC. Next, they've taken on the streamer/music server market with the M50 ($2499) and M52 Digital Music Vault (1999), both available now.

The M50 has WiFi, ethernet, USB and HDMI to handle PCM files up to 24/192 and has a CD slot for ripping discs and retrieving metadata. Streaming services should be available as options in about six months. For storing files, the M52 connects via USB and runs a 3TB RAID 5 Array. All functions can then be controlled via NAD's iPad app.