




Rockford Fosgate M5-800X4
M5 Series 800W Marine 4-Channel Amplifier
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Take your marine audio to the next level with the Rockford Fosgate M5-800X4 4-Channel Marine Amplifier. Engineered for clarity, power, and reliability, this amplifier delivers 800 watts of total output across four channels while withstanding harsh marine environments. Enjoy crisp highs, deep lows, and distortion-free performance on every voyage.
Feature | Details |
---|---|
Amplifier Type | 4-Channel Marine Amplifier |
Power Output | 100W RMS x 4 @ 4Ω, 200W RMS x 4 @ 2Ω |
Total Power Output | 800W |
Frequency Response | 20 Hz – 20 kHz |
Signal-to-Noise Ratio | >85 dB |
High-Pass/Low-Pass Crossovers | Variable, 50 Hz – 250 Hz |
Bass Boost | 0-18 dB @ 45 Hz |
Design | Compact, weather-resistant, corrosion-resistant connectors |
Compatibility | Universal marine audio systems |
Installation Notes | Compact design allows installation in tight spaces; includes wiring options |
Key Features | 4-Channel amplifier, High-Efficiency Class-D Technology, Optimized audio performance with variable crossovers, Marine-grade durable construction, Weather-resistant design |
What’s in the Box
- Rockford Fosgate M5-800X4 4-Channel Marine Amplifier
- Wiring harness
- Mounting hardware
- User manual

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.