USB mini type B.
3.5mm combination analogue/digital jack with mini Toslink digital optical <96 kHz output and 2-ch analogue line out, fixed 2v RMS.
3.5mm jack with variable-level headphone output, 130mW into 16Ω.
Extruded Aluminium shell with moulded plastic endcaps and rubber foot.
USB, nominal 5V at <500mA.
Three white LEDs show connected state and audio stream rate.
USB audio class compliant 2.0 HS 480Mb/s bandwidth.
Asynchronous: device is the clock source for high quality.
Firmware upgrade via USB.
Windows drivers provided, no drivers required for Macintosh OS X or Linux.
Analogue volume control for headphone output, controlled from PC, control law modified to match connected OS.
S/PDIF output downsamples 4x (192/176.4kHz) to 2x (96/88.2kHz).
Macintosh OS X 10.6.4 (Snow Leopard) or later
Windows XP SP3, Windows 7 SP1 or Windows 8
Linux kernel 2.6.37 or later and ALSA version 1.0.23 or greater