Light Harmonic (maker of the starship-esque Da Vinci digtal-to-analog converter (DAC)) goes for something smaller and cheaper with the Geek, a portable DAC the size of a USB thumb drive.
The Geek promises to give PC audio "more detail, greater depth, stronger bass and dynamics” by replacing built-in soundcards. It plugs into USB ports, drives 2 pairs of headphones or speakers, and supports high-resolution audio formats up to and including 384kHz PCM files.
Light Harmonic also claims the Geek is the first portable DAC able to process DSD and double-DSD files.