The rPAC is a USB powered DAC and headphone amplifier designed to dramatically improve the performance of PC and MAC computers. Simple to connect, easy to transport and delightful to use the rPAC is the most effective sonic upgrade for your computer you could possibly imagine.Plug in your headphones and you'll experience a level of sonic clarity far removed from the grainy, lifeless noise your computer usually serves up. Simply put the rPAC plays music.Using a digital to analogue converter (DAC) normally found in very high end HiFi components and Arcam's world-class audio circuitry, the rPAC takes audio files stored on a MAC or PC and delivers converts them into beautiful music with stunning clarity and precision. Its USB power system means no "wall wart" PSU is needed and the choice of line level output or headphones socket allows you to share the musical enjoyment with friends or keep it all to yourself!The rPAC will sit discreetly beside any desktop or laptop computer and is constructed using a durable, precision cast aluminum case. Designed for music lovers everywhere it is ideal for the home, office or on the road.