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.
