Peachtree Audio DAC-iTx Asynchronous USB input accepts up to up to 24-bit/192kHz signals so it can handle high-resolution downloads. USB, coaxial and optical digital inputs, High-grade ESS 24bit/192kHz Sabre 9023 DAC Includes IR remote control with discrete input selection, Power, and Mute. Asynchronous design reclocks any digital signal to dramatically reduce jitter. Everything from Pandora to 24/192 Studio Master files from sites like HDtracks.com sound amazing by taking advantage of the asynchronous USB input and ESS Sabre DAC. DACiTx is plug and play for Mac OSX 10.6.4 and newer and requires a simple driver install for Windows users USB Audio Driver for Windows XP, Vista, Windows 7 and Windows 8 needs install specific drivers (instructions available under technical specifications)