





Rockford Fosgate M2-300X4
M2 Series 300W 4-Channel Marine Amplifier
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Amplify Your Marine Audio with the Rockford Fosgate M2-300X4: Powerful 4-Channel Marine Amplifier
The Rockford Fosgate M2-300X4 4-channel marine amplifier is designed to bring premium sound quality and durability to your boat’s audio system. Engineered with Rockford Fosgate’s signature performance and rugged construction, this amplifier is built to excel in harsh marine environments—delivering clear, impactful sound whether you’re cruising, anchored, or docked. Compact, efficient, and weather-resistant, the M2-300X4 is the perfect upgrade for reliable, high-output audio on the water.
Experience Superior Sound Quality with the Rockford Fosgate M2-300X4
With 300 watts of total output across four channels, the M2-300X4 ensures your marine speakers deliver full-range audio—rich lows, vibrant mids, and crisp highs. Whether you're powering coaxial speakers or splitting channels for a sub and full-range setup, this amp delivers the sound fidelity you need to enjoy music the way it was meant to be heard—loud, clear, and immersive.
Compact and Durable Marine-Grade Construction
The M2-300X4 is purpose-built for the marine environment with a weather-resistant chassis and corrosion-resistant connectors that protect against salt, moisture, and UV exposure. Its compact form factor makes it easy to mount in tight boat compartments or custom enclosures, giving you the power you want without compromising space or durability.
Flexible Installation and High Efficiency
Designed for versatility, the M2-300X4 integrates seamlessly into both new and existing marine audio systems. Its efficient Class-D circuitry ensures cool, consistent operation even during long playtimes or demanding conditions. With support for 4-, 2-, and even 1-ohm loads, it adapts easily to your preferred speaker configuration.
Optimized Audio Performance
Fine-tune your system with the built-in variable high-pass and low-pass crossovers (50–250 Hz), giving you total control over the tone and balance of your sound. Whether you're enhancing the highs on your tower speakers or dialing in tight bass response, the M2-300X4 offers the precision you need for optimal performance.
Key Features:
- 4-Channel Marine Amplifier: Delivers up to 300 watts of full-range power across four channels.
- Compact, Weather-Resistant Design: Built to resist moisture, salt, and UV damage.
- Flexible Load Compatibility: Supports 4, 2, and 1-ohm speaker setups.
- Optimized Audio Controls: Variable HPF and LPF crossovers for precision sound tuning.
- High Efficiency: Class-D design runs cool and conserves power under heavy use.
Why Choose the Rockford Fosgate M2-300X4?
The M2-300X4 is an excellent choice for marine enthusiasts seeking clean, powerful sound in a space-saving, marine-ready package. With its rugged construction, flexible configuration options, and exceptional sound clarity, it provides the performance needed to elevate any boat’s audio system—no matter the size or application.
Upgrade Your Marine Audio with the Rockford Fosgate M2-300X4
Ready to boost your boat’s sound system? Order the Rockford Fosgate M2-300X4 4-channel marine amplifier today and experience superior audio performance with every wave and wake.
Specifications:
- Power Output: 75 watts x 4 @ 4 ohms, 100 watts x 4 @ 2 ohms, 150 watts x 4 @ 1 ohm
- Total Power Output: 300 watts
- Frequency Response: 20 Hz – 20 kHz
- Signal-to-Noise Ratio: >85 dB
- High-Pass/Low-Pass Crossover: Variable, 50 Hz – 250 Hz
- Dimensions: 8.1" x 5.3" x 1.6"
- Weather-Resistant: Yes, with corrosion-resistant terminals
FAQs
What is the power output of the Rockford Fosgate M2-300X4 amplifier?
It delivers 75 watts per channel at 4 ohms, 100 watts at 2 ohms, and 150 watts at 1 ohm, giving you plenty of power for a full-range setup or high-performance configuration.
Is the M2-300X4 amplifier weather-resistant?
Yes. It features a marine-grade weather-resistant chassis and connectors built to withstand salt, water, and UV exposure.
Can I install it in a tight space on my boat?
Absolutely. With its compact 1.6-inch height and 8.1-inch length, the M2-300X4 is ideal for tight installations in boats of any size.
Does it have audio tuning options?
Yes. It features variable high-pass and low-pass filters (50 Hz – 250 Hz) for full control over your system’s sound profile.
Is the M2-300X4 amplifier efficient?
Very. Its Class-D design ensures cool operation and minimal power draw, even under high-output conditions.
Why choose the M2-300X4 for my marine sound system?
Because it offers clear, reliable audio, rugged marine-ready construction, and versatile installation for any multi-speaker setup on the water.
Upgrade Your Audio Experience on the Water!
Don’t settle for weak sound at sea—order the Rockford Fosgate M2-300X4 today and enjoy crisp, powerful audio wherever your boat takes you.

FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.