4 x 4 24-bit/96kHz full-duplex audio interface 4 x 4 analog I/O software controlled 36-bit internal DSP digital mixing/routing software configurable for +4dBu and -10dBV signal levels zero-latency monitoring Apple G5 compatible - Incompatible exceptions includes Ableton Live Lite music production software, so you can make music right away frequency response: 48kHz sample rate input: +/-0.3 dB, 22Hz to 22kHz output: +/-0.2 dB, 22Hz to 22kHz 96kHz sample rate: input: +/-0.4 dB, 22Hz to 40kHz output: +/-0.3 dB, 22Hz to 40kHz dynamic range: 103dB (A-weighted) (D/A) 99dB (A-weighted) (A/D) THD: < 0.002% (D/A) 0.0023% (A/D) size/weight: 5-1/8” x 7/8” x 5-3/8”; 0.8 lbs. ASIO 2 MME Sound Manager OMS DirectX GSIF 2 Mac OS X Core Audio / Core MIDI Windows 98SE* / ME* / 2000 (SP4)* / XP (SP2)** For 96kHz operation: Pentium III 500MHz w/ 128MB RAM For 48kHz operation: Pentium II 400MHz w/ 64MB RAM * No ongoing updates/support for Windows 98SE, Me or 2000 ** Home and Professional Edition only. Windows Media Center Edition is not currently supported. M-Audio suggests you also check the minimum system requirements for your software, as they may be greater than the above. G3/G4* 500MHz G5 w/PCI-X expansion slots** - Incompatible exceptions OS 9.2.2 w/128MB RAM, Opcode OMS 2.3.8 for MIDI; Mac OS X 10.2.8, 10.3.8 w/256MB RAM Mac OS X 10.4.5 w/512MB RAM * G3/G4 accelerator cards not supported ** G5 with PCI-Express expansion slots not supported. *** No ongoing updates/support for Mac OS 9 or Mac OS X 10.2.8 M-Audio suggests you also check the minimum system requirements for your software, as they may be greater than the above.