Great For Motorcycle Audio, Pro Audio, Car Audio, Marine Audio, Powersports Audio and OEM Head Unit Installation. Can be used in 2, 3, and 4 channel configurations with the channel switch - Can be powered up by a signal from the RCA, Offset Voltage from Speaker Inputs, or a 12v remote - Small and powerful design so you can power your new equipment with great efficiency and power without taking up much space - Integrated low pass and high pass filter to help you get the perfect response you are looking for DS18 4 Channel Amplifier DX4 Total Watts (Peak): 3000W RMS Power @ 4 OHM: 150W x 4 RMS Power @ 2 OHM: 250W x 4 RMS Power @ 4 OHM Bridge: 480W x 2 AUDIO SPECIFICATIONS Frequency Response: 10Hz - 20KHz Signal To Noise Ratio: >98 dB Efficiency @ 4 OHM: 110% Damping Factor: >400 Channel Separation: >68 dB Total Harmonic Distortion (THD): 0.02% Low Level Input Range: 350mV - 5V High Level Input: Yes Selectable X-over: HPF/Full/BPF X-over Filter Range: 20Hz-4Khz(HPF)/ 50Hz-5Khz(LPF) X-Over Slope (cut): 24 dB/Oct FEATURES: Amplifier Class: Digital Amplifier Type: Stereo Full Range Number Of Channels: 4 Minimum Impedance: 2 Ohm Led Indicator: Power/Protection Power Input Terminal Size: 4 Ga Recommended Fuse Size: 100A Thermal Protection: Yes Over-Load Protection: Yes Short Circuit Output Protection: Yes Voltage Input Protection: Yes (10-15v) Body Color | Finish: Black Sandblasted DIMENSIONS: Length: 8.2“ Width: 4.3“ Height: 1.4“