I’ve been posting/updating my experience with the M50.2 CD player/digital server. I’m still waiting on the “due by the end of the year (2017)” DSD update, but for FLAC/streaming, I have no complaints. If you bargain hard, you might be able to score one of these units for ~2k, which is a good deal for a unit with AES/EBU and at least one stage of MQA decoding, not to mention integration with HDTracks and Tidal (and amazon music as well as other services).
My M50.2 plugged into a Dac2X V2 DAC, and the sound is fantastic. If NAD/Bluesound can give me DSD playback soon, I can stop searching for an SACD transport and digitize my SACD collection.
With respect to CD rips, I’ve been very surprised and impressed by the sound quality of the CDs I’ve put onto the M50.2. I’m yet to hear any tracks with any issues. According to NAD, the file checksums must match the information on the CD, so it’s pulling bit for bit copies.