Does it work well?
Yep. It's well-made, perhaps a little gaudy but not everyone will agree. Good materials. No hiccups in getting it to work. Sound quality is noticeably improved, especially at high volumes, provided you have the right headphones, the right audio files, and sensitive ears. Sound was slightly cleaner, a little bit more well-balanced, and certainly more capable of driving big, inefficient (but great-sounding) headphones. Has a miniUSB port for charging, which is welcome.