Planet Audio 5000W Mono Amplifier W/ Remote Subwoofer Control Features: Switchable Phase Shift (0-180°) Low Level Inputs and Outputs Power and Protection LEDs Illuminated Logo Strapping Capability: Strap two amps together for twice the power Type: Amplifiers Amplifier Class: Class D RMS Power: 3500W x 1 @ 1 ohms 2500W x 1 @ 2 ohms 1800W x 1 @ 4 ohms Frequency Response: 20Hz - 250Hz SNR: 105 dB Input Voltage: 100mV-2V or 2V-8V Built-in Crossover: Yes