ESI Maya 44 USB+, audio interface - 44.1/48kHz sample rate, 4x in/ 4x out (RCA phono), 18-bit A/D, 20-bit D/A, -10dBV unbalance in/out, optical S/PDIF out (mini-jack connector), headphone output (mini-jack) with 60mW amplifier, ASIO 2.0, MME, WDM and CoreAudio support (4x in/4x out), standard USB-PC/Mac connection, compatible with Windows & Mac OS, compact & lightweight design, Dimensions: 120 x 70 x 20 mm