Down4Sound M3-1500 | 1500W RMS Marine Monoblock Amplifier

DOWN4SOUND M3-1500 Marine & Powersports Monoblock Amplifier – 1500W RMS Class D

The DOWN4SOUND M3-1500 Marine & Off-Road Amplifier is a compact monoblock powerhouse delivering 1500 watts RMS of full-range Class D performance, engineered for serious marine and off-road applications. Built inside a rugged chassis designed for extreme environments, this amplifier is sealed to help resist moisture, salt, mud, and vibration.

Whether mounted in a boat hull, motorcycle saddlebag, side-by-side UTV, mud truck, or wake tower system, the M3-1500 delivers high-output performance with confidence.

Green/Blue/Orange Glowtek Finish

The housing features Glowtek Green/Blue/Orange, a glow-in-the-dark finish that charges from natural sunlight or artificial light sources. Please note: Black Gloss & White Gloss do not glow.

• Charges from any natural or artificial light source
• Emits a visible green glow in low-light and dark environments
• Glow effect naturally dissipates over time as stored light energy is released
• Rechargeable — exposure to light renews the glow effect repeatedly
• No wiring, batteries, or external power required for illumination

The glow intensity gradually fades as stored energy dissipates and can be restored anytime by re-exposing the surface to light. The finish delivers a bold, high-visibility aesthetic for night runs, dock presence, and show builds without affecting amplifier performance or reliability.

Power Output

• 1 × 1500W RMS @ 1Ω
• 1 × 1060W RMS @ 2Ω
• 1 × 700W RMS @ 4Ω

Full-range Class D circuit design for maximum efficiency and reduced heat in marine and powersports electrical systems.

• Band-pass capable for flexible system design
• RCA line output for easy system expansion

Marine & Off-Road Ready Construction

• Sealed aluminum housing
• Conformal-coated internal PCB
• Corrosion-resistant terminals
• Water-resistant construction
• Weather-resistant construction
• Engineered for vibration resistance in harsh environments

Precision Crossovers (Band-Pass Capable)

• Adjustable HPF & LPF (20Hz–800Hz)
• x10 multiplier for extended tuning range
• Band-pass capable using onboard crossovers

Compact High-Output Design

• 11.45" × 5.11" × 2.38"
• 291 × 130 × 60 mm
• Install-friendly footprint with serious output capability

Smart 4-Way Protection Circuit

• Thermal protection
• Voltage protection
• Short circuit protection
• DC overload protection

Designed for stable performance in demanding marine and off-road electrical systems.

Bluetooth Bass Knob (Optional Use)

• Includes Bluetooth bass knob controller
• Optional to use — amplifier operates fully without it
• Real-time display of volume, voltage, temperature, and clipping status

Technical Specifications

• Power: 1500W RMS total
• Channels: 1 (Monoblock)
• Class: Full-Range Class D
• Frequency Response: 10Hz–23kHz
• Input Sensitivity: 0.2V–6V
• THD: <0.1%
• S/N Ratio: >75dB
• Working Voltage: 9V–15.5V
• Fuse Rating: 150A
• Size: 11.45" × 5.11" × 2.38" (291 × 130 × 60 mm)

Use It On

• Wake boats, pontoons, jet boats
• Motorcycle baggers
• Side-by-sides and UTV builds
• Mud trucks and off-road systems
• High-output subwoofer and pro-audio marine setups

Why the M3-1500?

Because power, durability, and bold performance should never be a compromise.

• The M3-1500 Green Glowtek delivers massive output in a compact marine-ready chassis.
• Built for boats.
• Built for powersports.
• Built for serious subwoofer and pro-audio systems.

Add it to your system and keep your install powerful, clean, and professional.