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JBL MA1504 Marine 4-Channel Amplifier – 900W Class D Compact Boat Amplifier
The JBL MA1504 Marine 4-Channel Amplifier delivers powerful full-range JBL audio performance with 150 watts RMS x4 at 4 ohms, 225 watts RMS x4 at 2 ohms, and 450 watts RMS x2 in bridged mode for impressive sound output on boats and marine audio systems. Featuring advanced Class D technology, variable crossovers, low-noise performance, and a compact space-saving design, this marine-ready amplifier provides crystal-clear sound and high efficiency built for demanding marine environments.
Part Number: MA1504
Reference: JBLMA1504AM
In Stock: 2
$649.95
Available for local pickup at our Miami or Fort Lauderdale location
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JBL MA1504 Marine 4-Channel Class D Amplifier with 900W RMS Power, Compact Waterproof-Ready Design & Advanced Marine Audio Performance
The JBL MA1504 Marine 4-Channel Amplifier is designed to deliver powerful, efficient, and high-quality JBL sound performance for boats and marine audio systems. Built specifically for marine environments, this compact amplifier combines advanced Class D technology, flexible system tuning, and rugged reliability to create an exceptional onboard audio experience.
Its compact low-profile chassis makes the JBL MA1504 ideal for boats and marine installations where available mounting space is limited. Despite its compact footprint, the amplifier delivers impressive output power while maintaining high efficiency and low current draw, making it perfect for demanding marine audio applications.
Powered by advanced Class D amplifier technology, the MA1504 produces up to 900 Watts RMS total output, delivering clean, dynamic sound with minimal distortion. The amplifier provides:
- 150W RMS x 4 channels at 4 ohms
- 225W RMS x 4 channels at 2 ohms
- 450W RMS x 2 bridged at 4 ohms
This flexible power configuration allows the amplifier to support a wide variety of marine speaker and subwoofer setups, delivering powerful audio performance across the entire boat.
The JBL MA1504 also features variable high-pass and low-pass crossovers (32Hz–320Hz) on both front and rear channels, allowing precise system tuning and optimized sound performance for marine environments.
Designed for compatibility and installation flexibility, the amplifier includes:
- Speaker-level and low-level inputs
- Full-range preamp outputs
- Adjustable input sensitivity controls
- Selectable turn-on modes for factory and aftermarket marine stereos
To ensure clean audio reproduction onboard, JBL engineered the amplifier with Balanced Differential Inputs, helping minimize engine noise, interference, and distortion even at high volume levels.
The amplifier also includes comprehensive onboard protection circuitry against:
- Overheating
- Short circuits
- Overvoltage
- Undervoltage
Its rugged construction and reliable protection systems make it an excellent choice for long-lasting marine audio performance in boats, yachts, fishing vessels, and other outdoor marine applications.
Key Features
| Feature | Description |
| Amplifier Type | 4-Channel Marine Amplifier |
| Amplifier Technology | Class D |
| Total Power Output | 900W RMS |
| Compact Design | Low-Profile Marine Chassis |
| Variable Crossovers | High-Pass & Low-Pass Filters |
| Preamp Outputs | Full-Range Outputs |
| Input Compatibility | Speaker-Level & Low-Level Inputs |
| Noise Reduction | Balanced Differential Inputs |
| Turn-On Modes | DC & REM Selectable |
| Protection Circuitry | Thermal, Voltage & Short Protection |
| Marine Application | Boats, Yachts & Outdoor Audio Systems |
Power Specifications
| Specification | Details |
| Power Output @ 4 Ohms | 150W RMS x 4 |
| Power Output @ 2 Ohms | 225W RMS x 4 |
| Bridged Power Output | 450W RMS x 2 |
| Total RMS Power | 900W |
| Frequency Filters | 32Hz – 320Hz |
| Filter Slope | 12 dB/Octave |
Dimensions
| Specification | Measurement |
| Amplifier Dimensions | 14-3/16” x 2-1/16” x 7-1/8” |
| Metric Dimensions | 360mm x 51.3mm x 180mm |
| Chassis Design | Compact Low-Profile |
Installation & Connectivity
| Specification | Details |
| Inputs | RCA & Speaker-Level Inputs |
| Preamp Outputs | Yes |
| Recommended Wiring | 4-Gauge Power & Ground |
| Fuse Rating | 35A x 3 |
| Turn-On Options | DC / REM Selectable |
What's In The Box
- JBL MA1504 Marine Amplifier
- 4 Bare Wire-to-RCA Adapters
- 6 x 35A ATO Fuses
- Mounting Screws
- JBL Stickers
- Owner’s Manual
- JBL Logo Badge
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