The Audioengine D1 24-Bit DAC/Headphone amp is a premium 24-bit DAC and headphone amplifier for your computer, TV and more. High-performance headphone amp Stream bit-perfect 24/96 HD audio USB audio input Optical audio input Analogue audio output Plug and play Enhance your sound Perfect for providing high-quality audio to speakers or headphones, the D1 is a premium 24-bit DAC and headphone amplifier for your computer, TV and more. The D1 connects to your computer’s USB port or optical output without any software to download, making the D1 quick and easy to set up. Premium 24-bit DAC Audioengine D1 Premium 24-bit DAC (digital-to-analogue converter) allows you to bypass your computer’s soundcard or headphone output and send audio through USB or optical. D1 processes digital audio of any bit depth up to 24 bits and any sample rate up to 192kHz. With its high signal-to-noise ratio and low distortion, the D1 delivers sound quality generally heard only in more expensive DACs. The high-performance headphone output is designed for a wide range of headphones and will satisfy even the most demanding headphone enthusiasts. D1 is the perfect digital interface between your computer and music system and will improve the sound of quality of all your music. Always ready to go The D1 accepts inputs from both USB and optical and has outputs for any audio system or headphones. The D1 DAC is the perfect way to get great-sounding music not only from your computer but from your TV, Apple TV, Blu-ray player or CD player. DirecTV and Comcast also have optical outputs for high-res audio.