Update: got around to trying different combinations of files and devices. I tried files on the AK100 & an iPad (using Ampliflac & a Lightning-USB connector). The Hugo shows the 192k & 176k files and the sound is good using the iPad-Ampliflac, the AK100 was fine on 44kHz & below, struggles on 96k files, and seems to output nothing on 192k files. I tried 32Gb & 64Gb cards, no difference.
2/11/14 at 12:47pm