Weatherproof Compact Monoblock Marine Amplifier - 300WPioneer's GM-ME300X1C is a weatherproof, Class-D monoaural marine amplifier that is IP67 rated and SAE J1171 Certified. This amplifier features 21-step frequency selection and top adjustment access that benefits when installing into narrow compartments. The microcomputer Protection Control System (PCS), provides thermal protection, controlled current, and voltage protection to ensure stable output operation. The microcomputer also provides a selectable power mode to match the speaker's handling.Features:IP67 ratedPCS (Protection Control System)21-step frequency selection (LPF/HPF)Switching power supply controlled by microcomputerTechnical Specifications:Number of Channels - 1Frequency Response - 20 - 240 Hz2 Ohm RMS Power Per Channel - 300W x 1Signal-to-Noise Ratio - 75dBDimensions (L x W x H) - 11-13/16 x 4-1/8 x 1-5/8*Sold as an Individual