Down4Sound M3-1004 (marine) - 700W RMS Amplifier
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The DOWN4SOUND M3-1004 Marine & Off-Road Amplifier is a compact 4-channel Class D amplifier delivering 700 watts RMS of clean, efficient power for boats, jet skis, side-by-sides, UTVs, motorcycles, mud trucks, and off-road builds.
Engineered for demanding marine and outdoor environments, this amplifier features a sealed aluminum chassis, conformal-coated internal PCB, and corrosion-resistant terminals designed to withstand moisture, salt air, mud, vibration, and real-world exposure.
With proper installation, the M3-1004 is built to handle extreme marine conditions, including high-moisture and water-exposed applications. Whether mounted in a wake boat hull, jet ski compartment, motorcycle saddlebag, side-by-side dash, mud truck cab, or custom off-road build, it delivers reliable performance with confidence.
Power Output
- 4 × 100W RMS @ 4 ohms
- 4 × 160W RMS @ 2 ohms
- 2 × 330W RMS @ 4 ohms bridged
- 700W RMS total output
Full-range Class D design ensures high efficiency and reduced heat, ideal for marine and powersports electrical systems.
Built for Marine & Off-Road Environments
- Marine-grade construction
- Sealed aluminum housing
- Conformal-coated internal PCB
- Water Resistant Construction
- Weather Resistant Construction
- Corrosion-resistant terminals
- Designed for high-moisture and water-exposed installations
- Engineered for vibration resistance in marine and off-road conditions
Precision Crossovers – Band-Pass Capable
- Adjustable HPF & LPF: 20Hz–800Hz
- Band-pass capable using onboard crossovers
- 41-point dial control for accurate system tuning
Flexible integration for speakers, midrange drivers, and compact subwoofer setups.
Compact Installation Size
- 9.84" × 5.11" × 2.38"
- 250 × 130 × 60 mm
Perfect for tight installs in:
- Wake boats
- Pontoon boats
- Jet boats
- Jet skis
- Motorcycle baggers
- Side-by-sides & UTVs
- Mud trucks
- Overland rigs
- Off-road builds
- Custom show systems
Smart 4-Way Protection Circuit
- Thermal protection
- Voltage protection
- Short circuit protection
- DC overload protection
Designed for stable performance in demanding marine and powersports electrical systems.
Technical Specifications
- Total Power Output: 700W RMS
- Channels: 4
- Class: Full-Range Class D
- Frequency Response: 10Hz–23.7kHz
- Input Sensitivity: 0.2V–6V
- THD: <0.1%
- Signal-to-Noise Ratio: >83dB
- Operating Voltage: 9V–15.5V
- Fuse Rating: 60A
Why Choose the M3-1004?
Because power, durability, and clean design should perform anywhere — on water, in mud, or on the trail.
- The M3-1004 delivers dependable marine and off-road audio performance in a compact, installation-friendly chassis built for real-world conditions.
- Built for boats.
- Built for powersports.
- Built for on-road and off-road systems that demand reliability.
Add it to your setup and keep your install powerful, clean, and ready for the elements.
Authorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.
