FIREWIRE AUDIO INTERFACE MOTU 4 Pre Hybrid, 6x8 USB/Firewire Audio-Interface with 4 Mic Preamps at 24-Bit/96 kHz, Inputs: 4 XLR/TRS Combo inputs switchable between Line or Mic sensitivity, 2 1/4'' TRS jack, 2 1/4'' inputs. Hi-Z (high impedance) for instrument (guitar, bass, etc). Outputs: 4 balanced 1/4'' TRS jack outputs, 2 headphone outputs, coaxial S/PDIF I/O output, Firewire 400 and USB 2.0 connections , SMPTE Sync In/Out, 48V Phantom Power, -20 dB Pad, includes power supply and drivers for Win Vista/7/MAC OSX 10.5 or higher.