iFi Micro iDAC High Definition (24/192) Asynchronous USB Digital Audio Converter (DAC) High-Definition audio like never before. A fantastic dynamic range means more of everything. More detail, more musical, and most of all: more fun. All your music will sound outstanding on the iDAC With 3 dedicated internal power supplies, they provide a clean environment for the DAC to produce high-resolution audio Augmented by the ESS Hyperstream Chipset - typically reserved for expensive high-end audio equipment, music reproduction is startling realistic.