Kicker 48PXA4004 is a 4-channel Class D waterproof powersports amplifier for full-range speaker systems. The compact IP66/IP67-rated design gives UTV, motorcycle, boat, and space-limited installs strong speaker power without a large amplifier footprint. Key Performance Features 4-channel waterproof powersports amplifier Class D amplifier platform 100 W x 4 full-range amplifier output IP66/IP67-certified waterproof and dustproof design Solderless, crimpless power and ground couplers included System Configuration & Flexibility Channels: 4 Primary Use: Full-range speaker amplification Application: Powersports, UTV, motorcycle, boat, and compact installs Amplifier Class: Class D Power Output Rated Output: 100 W x 4 RMS @ 4Ω: Not provided RMS @ 2Ω: Not provided Signal Control & Protection Crossover and control functions must be verified during installation Protection circuitry for powersports installation environments Designed for use with factory or aftermarket source units when properly integrated Installation Notes Compact mounting location required Power and ground wiring required Proper ventilation and weather-aware mounting are required even with waterproof construction Marine Durability Designed for boat, powersports, and outdoor audio environments when used in the intended application Weather-resistant materials for UV, moisture, and salt/fog exposure Corrosion-resistant construction details support marine installation use Technical Specifications Brand: Kicker Series: PXA Model: 48PXA4004 / PXA400.4 Amplifier Type: 4-channel full-range amplifier Amplifier Class: Class D Environmental Rating: IP66/IP67 Identifiers & Packaging MPN: 48PXA4004 UPC: 713034088479 Sold As: Each Included Components: Amplifier, power/ground couplers, mounting hardware, documentation Why Buy From MCOR Automotive Authorized retailer for the brands we sell Specialists in marine, powersports, and vehicle audio upgrades Expert support for amplifier matching, wiring requirements, and system planning