Okay people just confirmed one issue with the Hugo. There is a slight background hiss when using IEM's. This is noticeable when the music stops playing. I would never have noticed this until someone on another thread mentioned a friend told him of a hiss issue. I noticed it when I stopped the music, cranked the volume up (don't do this with music on!) and then plug and unplug the IEM's. Again not really noticeable and frankly can't hear it when the music is on. Intellectually a bit annoying. Thought people should know as some may fixate on such issues - if that is the case for you caveat emptor. For me not an issue - I don't hear it when the music is playing and that's when the enjoyment starts anyway.