Amplifier Class: Class AB RMS Power: 90w x 4 @ 4-Ohm 160w x 4 @ 2-Ohm Bridged Power: 320w x 2 @ 4-Ohm Built-in Crossover: Yes Crossover Frequency Range: 55Hz-550Hz 550Hz-5.5kHz Bass Boost Control: 0-15dB @ 45Hz Load Impedance Capability: 2 Ohm Speaker Level Inputs: Yes