I've got it, last week, and unfortunately there is no difference between my PC Lenovo Thinkpad t420 headphone out and the explorer headphone out. I 've tried Spotify 320kbs, and FLAC. I use a pair of Grado SR80e. Should I have to burn in? Are the grados suitable for the explorer?
I suggest you buying a high quality usb a to mini usb b cable that is made for audio purpose such as audioquest diamond or cinnamon, supra usb2.0 series, wireworld platinum starlight 7, etc. Hope this help.