The Fast Track Pro delivers all the mobile recording flexibility of the Fast Track USB, plus even more professional features. You get 2 front-panel mic/line inputs complete with phantom power for condenser microphones, inserts for outboard effects balanced and unbalanced analog outputs, S/PDIF digital I/O, MIDI I/O, and more. Fast Track Pro also features near-zero-latency direct hardware monitoring and low-latency ASIO software monitoring, plus an A/B source switch and dual output pairs for DJ style cueing. Fast Track Pro is compatible with most popular Windows and Mac music software. Features include: 24-bit 96kHz audio interface with dual mic/instrument preamps Balanced/unbalanced analog I/O S/PDIF coaxial; MIDI I/O 1/4 inch headphone output with level control and A/B source switch Windows and Mac compatible Class compliant with Mac OS X 10.3.9 and higherUSB connection and bus power along with class compliancy for Mac OS X make it a breeze to set up.