Pyle Marine 2-Channel Waterproof Amplifier 400W

Pyle PLMRMP1B is a compact, waterproof 2-channel marine amplifier kit that delivers up to 400 watts of power and includes a waterproof 3.5mm-to-RCA cable and remote volume control for boats and other watercraft.

This weatherproof amplifier is built for harsh marine environments and for owners who want a reliable, compact power boost for speakers and subwoofers on boats, ATVs, or RVs. The PLMRMP1B offers flexible inputs (RCA line, high/low speaker level), an electronic crossover, anti-thump turn-on, and power protection circuitry to protect your system. It ships with a wired, mountable volume control and a waterproof pouch for connecting and protecting MP3 players and phones while underway.

How does this amplifier perform on a boat or other watercraft?

The PLMRMP1B is designed to operate in wet and salty conditions without sacrificing audio clarity. It provides stable stereo power with low distortion and a high signal-to-noise ratio to keep music clean even at higher volumes.

• 2 x 100W RMS at 4 ohms for consistent continuous output
• Up to 2 x 300W RMS at 2 ohms for higher-demand speaker loads
• Signal-to-noise ratio greater than 95 dB for minimal background hiss
• Total harmonic distortion below 0.05% for accurate sound reproduction

What inputs, controls and protection features are included?

The amplifier supports both line-level RCA inputs and high-level speaker inputs so it integrates with factory head units or aftermarket sources. Controls and switches are accessible behind a watertight cover for safe adjustments, plus circuit protection preserves speakers and amp electronics.

• RCA stereo input and 3.5mm-to-RCA waterproof adapter for MP3 players
• Adjustable gain, polarity switch and electronic crossover network
• Anti-thump soft turn-on, power protection circuitry and a 10A fuse
• Remote wired volume control with dashboard-mountable knob and power-off at minimum

How easy is installation and where can it be mounted?

The PLMRMP1B is compact and includes mounting brackets and hardware for attachment to bulkheads, compartments, or panels. Its compact footprint and marine-rated build make it suitable for tight or exposed installations aboard boats, ATVs and RVs.

• Compact dimensions: 4.13" L x 3.35" W x 1.38" H for space-conscious installations
• Included mounting brackets and screws for secure fastening
• Watertight plug covers switches and status LED for outdoor exposure
• Works with both RCA head units and speaker-level outputs for flexible wiring

What sound customization can I make with this amp?

The onboard electronic crossover and gain controls let you tailor low-end distribution and overall balance between speakers and subwoofer. The polarity switch helps optimize bass interaction when multiple speaker sources are present.

• Electronic crossover network to route frequencies as needed
• Gain control for matching amplifier level to other system components
• Polarity switch to refine bass phase and improve low-frequency response
• Input-level switch for LINE or SPEAKER connections to prevent mismatch

Who is this for: The Pyle PLMRMP1B is best suited for boat owners, anglers, and outdoor vehicle enthusiasts who need a small, rugged amplifier that resists moisture and salt while delivering punchy, low-distortion sound. It's ideal for upgrading factory audio on watercraft or adding dedicated power to a compact speaker or subwoofer setup where space is limited but reliable marine-rated performance is required.