Hifonics Brutus BXI2610D 2600 Watt D-Class Mono Amplifier 1 x 850 W @ 4 Ohms, 1 x 1700 W @ 2 Ohms, 1 x 2600 W @ 1 Ohm Bass EQ with 45Hz bass boost and variable control from 0db to 10db; Variable Low Pass, Subsonic Filter, Phase Shift and Level Control Balanced line input for MX accessories and line drivers.Frequency response: 35-250 Hz.4-gauge power and ground wiring is required for installation Built-In System Diagnostics protects from short circuits, over load, thermal overheat and DC Offset; Bass Remote included Link & Sync feature allows the mono amps to be strapped or bridged via master/slave configuration