POWER SUPPLY: 250 watt, Four Output Complies with UL/CSA/VDE/CE Input Voltage: 110-220 V AC Input Frequency: 50 Hz to 60 Hz OPERATING SYSTEM: DOS, Windows™ for System Controller Card MWare™ operating software for Digital Audio Processing Card (In Windows™ Environment) AUDIO DEVICES: Automatic Mixers from 2 to 8 (expandable to 16) channels MM-8800 Series Control Externally controllable levels, switches, and routers Crossovers: 2-way, 3-way, and 4-way slopes from 6 to 24 dB per octave in 6 dB step