Fantastic little unit, just what I was after, something that would play FLAC files. Only niggle I've had is that some FLAC files won't play when they've been obtained from 'certain' sources. So I'm taking FLAC files, converting them using VLC media player to FLAC files but with the highest possible bit rate etc, and they are working a treat. Other thing to watch is if the music file data is missing 'Album Artist', they don't show up, so I'm using MP4Tag to make sure all metadata is included. The sound quality is fantastic. I'm using it with both Apple in-ear 3.5mm buds, and an Audio Technica ATH M50. I've been AB testing with MP3 files of the same song - e.g. Funkadelic's Maggot Brain, there's literally whole guitar tracks missing from the MP3 version. Highly recommended. The UI and screen is a little old school but this wasn't important to me as I'm purely interested in audio (but it does play video etc too).