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Rockford Fosgate M5-800X4 800 Watt 4 Channel Marine Amplifier
    Rockford Fosgate M5-800X4 800 Watt 4 Channel Marine Amplifier
    Purchase Rockford Fosgate M5-800X4 800 Watt 4 Channel Marine Amplifier
    • SKU: M5-800X4
      Rockford Fosgate M5-800X4 800 Watt 4 Channel Marine Amplifier

    • $599.99

      In stock

    Free Shipping
    Orders over $100. Lower 48 states only.
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    No-hassle returns. We'll pay for the return label.
    60-Day Guarantee
    We stand by our products. If an issue arises, we'll help you out.
    Need help with your order? Give us a call at 800-480-0647.

    The Rockford Fosgate M5-800X4 are an improvement and upgrade based on their Power Mini Marine amplifier the TM400X4AD. It is now waterproof and IPX6 rated. This means that the amplifier is waterproof, but it can't be submerged. You can wash it down hose it off, you just can't stick it under water. The waterproof pigtails and connectors are included with the amplifier as well as the smoked cover for the controls. You must use the cover and the included harnesses to achieve the IPX6 rating. In addition, the amplifier now features "Preset" switches if you are using it with a Rockford Fosgate UTV stereo kit. You can simply turn the "Preset" switch to the "On" position, select the high-pass or low-pass filter, and the amp will be preset to the ideal tune developed from Rockford's engineers.

    From a power standpoint, the M5-800X4 uses the new CTA-2006, industry standard, Dynmaic Power ratings and proves that this amplifier out performs the traditional bench specs. The M5-800X4 puts out 125 watts of power to each speaker at 4 ohms and 200 watts of power at 2 ohms. This is tons of raw power coming out of a very compact, yet efficient amplifier. Per the CTA-2006 specification, the constant power rating is the wattage for the test bench to compare amplifiers against amplifiers in a test environment. The Dynamic power rating you see below is the real-word, actual-output of the amplifier when connected to a speaker and playing music. Rockford Fosgate has always been conservative with their ratings, now they have an industry standard, CTA-2006 to show and prove the actual output.

    These amplififers sound incredible. When you compare the size, output, and price, you will see that the M5-800X4 is one of the best values in all marine audio.

    Product Specs
    Rated Power @ 4 Ohm
    100W x 4
    Rated Power @ 2 Ohm
    100W x 4
    Rated Power (Bridged @ 4 Ohms)
    200W x 2
    Dynamic Power @ 4 Ohms
    125W x 4
    Dynamic Power @ 2 Ohms
    200W x 4
    Frequency Response
    10Hz - 20kHz
    Input Sensitivity
    150 mV to 12 V
    High-Pass, Low-Pass, All-Pass
    12 dB/Octave
    LED Clipping Indicator
    Recommended Power Wire
    8 AWG
    Height (Not Including Harness)
    1.7" (42.8mm)
    Width (Not Including Harness)
    4.25" (108mm)
    Depth (Not Including Harness)
    8.41" (213mm)
    IP Rating
    Why Should You Buy from
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    3. Free Returns
    4. You can return any item within 30 of receipt. Continental US only. No re-stocking fees. We email you a label. You drop it off at a FedEx location. Items must be un-installed and in the original packaging.
    5. 60 Day Satisfaction Guarantee
    6. We sell the best products in the industry. If you decide within 60 days that you don't like the way your boat sounds, let us know. We will work with you to exchange your products for something else. We want you to be happy with the way your boat sounds, we believe in the products we sell, and we are confident that we can find a solution that will put a smile on your face.
    7. Online Authorized
    8. We are online authorized to sell the best motorcycle audio products in the world. When you buy from, not only do we stand behind the product, but so does the manufacturer. We are online authorized for Kicker, Rockford Fosgate, Stinger, Hertz, and more. Your warranty is valid.