Behringer U-CONTROL UCA202 USB Interface

Ultra-Low Latency 2 In/2 Out USB/Audio Interface with Digital Output.
Ultra-flexible audio interface connects your instruments, mixer, etc. with your computer for recording and playback.
High-resolution 48 kHz converters for high-end audio quality.
Works with your PC or Mac * computer - no setup or drivers required.
Stereo Headphone output with dedicated Level control lets you monitor both input and output.
Additional S/PDIF optical output for direct digital conversion.
Powered via USB - no external power supply needed.