nanocompo Nano-D1 Digital/Analog Converter Convenient, compact design - Measures in at less than 6 square and 1.5 tall. The seamless cabinet is made of die-cast aluminum, with a versatile, low-profile design that allows for display either horizontally or vertically High-resolution audio ready - The onboard digital-to-analog converter (DAC) supports high-resolution sampling rates up to a stunning 192kHz/24-bit. And with 3 inputs (USB, optical, and coaxial), it's easy to connect to any digital source High-quality headphone amplifier - Upgrading your headphone listening experience is as simple as plugging in. The built-in headphone amp features Burr-Brown's OPA2132 chip and a sophisticated impedance selector designed to optimize sound quality Plug-and-play compatibility for Mac & PC - Hook up to your computer and start enjoying the music on your hard drive. No drivers or software to install. A fully asynchronous USB input delivers exceptional quality at all sample rates and from all file types Jitter-free, high-performance up sampling engine - Burr-Brown's high-end sample rate converter (SRC-4392) up samples all digital sources to 24bit/192Hz