JL Audio AP300/4 300W RMS 4-Channel Full-Range Class D IP67 Marine Amplifier (010-03429-00)

The compact JL Audio AP300/4 brings four channels of efficient Class D amplification to boats where installation room is limited. Designed for marine durability, it combines a built-in setup display, flexible channel configuration, and IP67-rated protection for its amplifier body.

Key Features

• Four full-range channels support multiple onboard listening positions
• Up to 300W RMS total at 2 ohms
• Bridgeable outputs for flexible speaker configurations
• Ignition-protected, IP67-rated amplifier body (cables excluded)
• Built-in LCD setup interface and support for compatible Easy Tune configurations

Technical Specifications

• Channels: 4
• RMS Output at 14.4V, 4 Ohms: 50W RMS x 4
• RMS Output at 14.4V, 2 Ohms: 75W RMS x 4
• Bridged Output at 14.4V, 4 Ohms: 150W RMS x 2
• Dimensions: 10.43" W x 4.90" D x 1.86" H
• Fuse Rating: 35A
• Amplifier Class: Class D
• Input Voltage: 9–16V DC
• Environmental Rating: IP67 (amplifier body; excludes cables)
• Operating Temperature: -4°F to 149°F (-20°C to 65°C)
• Frequency Response: 20Hz–20kHz (+0/-1dB)
• RCA Input Sensitivity: 0.2–2V RMS (low); 0.8–8V RMS (high)
• Protection: Under/overvoltage, overtemperature, output short circuit
• Minimum Power/Ground Wire: 4 AWG copper
• Manufacturer Warranty: 3 years

Compatibility

Compatible with marine speakers and audio sources supplying an appropriate line-level input. Garmin Audio Easy Tune functions require a compatible source unit with DSP support.

Installation Notes

Ensure adequate wiring, fuse protection, ventilation around mounting surfaces, and correct bridged-load impedance. IP67 rating does not apply to external wiring.

What’s in the Box

• JL Audio AP300/4 amplifier
• Manufacturer-supplied connection and installation components; exact accessory quantities not independently confirmed