Hi all. Bought this one just for the fun of it all, listened to a variety of material, for now only on Westones UM3X, but planning to try it with some other headphones as well (IEMs and over ears).
Anyhow, the first and staying impression is that the sound is VERY detailed. So detailed it gets tiring. Perhaps it's the combination of the highly resolving IEMs and the highly resolving source, but still. The big picture of music (the fun and the magic) gets obscured by little details. Perhaps some would call this kind of sound "analytical". Other than I couldn't hear any significant differences from Nokia N9 (yeah, not exactly audiophile-grade stuff) that I use all the time on the go. The amount of additional detail is massive, but that is all. I want to trying pairing it with a darker monitor, such as IE8 and see what happens. So far I like Nokia's take with all its distortions (albeit small) more pleasing and relaxing. Speaking of distortions, they're very low, I judge this by how loud you can play it before it starts to hurt. Obviously with the Colorfly you can make it very loud without discomfort. I'd still get equally tired of listening to it after a while regardless if it's quiet or loud.
Other things of note: CLICK CLICK CLICKS everywhere - when switching tracks (even when playing in a playlist), it clicks every time which is very stupid. If you're switching between modes (DAC, player, etc..) the click is very LOUD and can make your ears hurt. It's like getting an electrical shock once and you never get to really trust the device afterwards. Sad.
The build quality is okay, the included mini USB cable doesn't fit snugly and wobbles slightly, the computer once dropped the connection whilst copying files probably because of that cable but who knows... The included cover/case covers the mini jack output so you can't anything into it.
The firmware is very raw, full of grammar errors and refusing to update to a newer version (if we are to believe the version numbers posted on the website are correct), the inclusion of preset equalizer settings is downright dumb in my opinion, you can't fine tune it and are left with lousy "Rock" "Pop" etc settings which seriously foil the sound quality. Even more idiotic is that they decided you'd need it so often on a hifi device that it warrants having a separate button on the front that is too easy to press accidentally which will leave you wondering what happened to the sound. Equally baffling is the resolution/bitness switch on the same button. I personally don't want to press it all the time to switch between 44.1 and 192, has this thing been designed by an engineer? The UI is ugly and not exactly fluid. Switching between FLAC tracks always pops up a message about a "Play Error!" but then the file plays just fine afterwards.
The screen quality is very bad. The viewing angle is so narrow that even when viewed with ONE eye, one part of the screen will look washed out while the other will be sort of normal. With two eyes it's much worse and uncomfortable.
Finally, yes, the front is lacquered metal and the wood back feels nice in hands.