M-Audio Transit Pro

Transit Pro has a built-in high quality headphone amplifier with both ¼-inch and 1/8-inch jacks, for connecting any headphones directly without the need for an adapter. Transit Pro is USB-bus-powered or you can use an optional AC wall adapter (not included). Transit Pro is the answer when you need to deliver a reference-quality digital signal from your computer to an external audio component.

Features:

Super-high resolution USB to optical/DSD converter
Eight user-selectable sampling rates: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384kHz
Signal-to-noise ratio: 112dB
Extremely low distortion: THD+N 0.003%
Digital (optical) and analog outputs
Direct Stream Digital rates: DSD64, DSD128
Dual headphone outputs: ¼-inch, 1/8-inch
Compatible with headphones from 16–600 ohms
USB-bus-powered or optional AC adapter