Shockwave Technology brings together outstanding sound quality, high performance characteristics and unprecedented reliability into a 4/3/2 channel marine grade amplifier. Conformal coated circuit boards protect the smallest components from any humidity or atmospheric moisture, while custom molded grommets around cable extrusions and gaskets between all meeting points eliminate any chance of water or dust intrusion. Designed to support the widest variety of applications, Shockwave Technology amplifiers operate both 4ohm and 2ohm speaker configurations from RCA input connections. Running 2ohm configurations allows more speakers to be powered and ideal for high background noise environments such as marine or motorcycle applications. Digital amplifiers are much more efficient than traditional amplifiers; producing less heat, lowering power consumption, reducing strain on batteries and charging systems, and ideal for motorcycle installations. Class D Digital Amplifier 4x RCA Input Channels 4/3/2 Output Channels 4 Ohms / 2 Ohms Output Impedance Power Output (max) @ 4 Ohms, 10% THD:400W (4 x 100W) Power Output (max) @ 2 Ohms, 10% THD:600W (4 x 150W) Power Output - Bridged @ 8 Ohms, 10% THD:2x 200W Power Output - Bridged @ 4 Ohms, 10% THD:2x 300W Frequency Response:15Hz - 25,000Hz Input Sensitivity:200mV to 4V Gold plated connectors 2 7/64" X 6 1/16" X 7 7/8"