Cerwin Vega Pro Cv-1800 1800-Watt High-Performance Professional Power Amplifier (Discontinued by Manufacturer) Low-Profile Remote Auto Antenna With Mcx Connector, Magnetic & Suction Cup Mounts Freq Resp: 2020 Khz @ +0/-0.3 Db Signal To Noise Ratio: 102 Db Power Ratings Up To 2800W Stereo Rated Output Power: 2?@900W; 4?@600W; 8?@400W