This is the ultimate Buyer’s guide to the Best marine 4 channel amplifier and most important is that, In picking this marine 4 channel amplifier, we have considered a lot of factors like quality, features, product price and many more so you can not go wrong with your product purchase.

We have spent around 30 hours to find the right option for you and based on our research Pyle Hydra Marine Amplifier – Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier, Waterproof, 12 volt, Dual MOSFET Power Supply, GAIN Level Controls, RCA Stereo Input & LED Indicator – PLMRA400 is our top pick for you. This is one of the best products currently available in the market. However, if you don’t want to spend extra hours then we have another great option for you is Pyle Hydra Marine Amplifier – Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input – PLMRA420. Here is a review of some of the best marine 4 channel amplifier, together with their features and functions.

As you read, through the article, you will understand some of the top marine 4 channel amplifier and learn more about their features. Let’s proceed without wasting any more time.

Best marine 4 channel amplifier

Image
Product Title
Score

Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier
9.7

KENWOOD KAC-M5014 4-Channel Compact Digital Amplifier (600W) for Car, Marine, UTV & Motorsport Vehicles, Solid Corrosion-Resistant Aluminum Chassis, IPX6, IPX7 & IP6X Certified and Vibration-Proof
9.4

Skar Audio RP-150.4ABM 1,000 Watt Full-Range Class A/B 4-Channel Marine Amplifier
9.1

Pyle Hydra Marine Amplifier - Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input - PLMRA420
8.6

Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
8.3

Pyle Hydra Marine Amplifier - Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier, Waterproof, 12 volt, Dual MOSFET Power Supply, GAIN Level Controls, RCA Stereo Input & LED Indicator - PLMRA400
8.2

Pyle 800W 4-Channel Hydra Marine Micro Amplifier - Waterproof - GAIN Level Controls - RCA Stereo Input - 3.5mm Jack - MP3 - Volume Control - Short Protection - For Boat & Vehicle Use - PLMRMP3B
7.7

Stinger Audio MT-600.4M 1000 Watt RMS 4-Channel Compact Marine Audio Amplifier, Class D, Hexfet Mosfet, Water-Resistant, Crossover High-Pass/Low-Pass Filters
7.4

BOSS Audio Systems MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer
7.1

Rockville RXM-F3 1600W Peak/260W RMS 4-Channel Class A/B Marine Amplifier with PA Microphone, Waterproof Conformal Coating, Smart Auto Turn-On for Boats
6.3

Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier


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Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier

 in stock
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • 500-Watt MOSFET 4-Channel Class A/B Power Marine Amplifier
  • RMS Power at 2 Ohms: 125 Watts x 4 Channels
  • RMS Power at 4 Ohms: 75 Watts x 4 Channel
  • Fully Marini zed with Waterproof Coating on Circuit Board & Rust Proof Painting on Mechanical Case
  • User Adjustable Controls: Gain, Variable LPF, HPF, Bass EQ Switch (0, +6, +12 dB)

KENWOOD KAC-M5014 4-Channel Compact Digital Amplifier (600W) for Car, Marine, UTV & Motorsport Vehicles, Solid Corrosion-Resistant Aluminum Chassis, IPX6, IPX7 & IP6X Certified and Vibration-Proof


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KENWOOD KAC-M5014 4-Channel Compact Digital Amplifier (600W) for Car, Marine, UTV & Motorsport Vehicles, Solid Corrosion-Resistant Aluminum Chassis, IPX6, IPX7 & IP6X Certified and Vibration-Proof

$249.00
$162.95
 in stock
11 new from $162.95
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • FOR CAR, MARINE, UTV & MOTORCYCLE - Add clarity to a basic sound system in land or water with KENWOOD KAC-M5014 4-Ch Digital Amplifier. With double the power than its competitors, at 600W (50W x 4), enjoy unmatched sound quality for your favorite tracks
  • BUILT TO LAST - The Corrosion-Resistant Aluminum Sealed Chassis and stainless-steel screws ensures high durability, while the Drain Tunnel Structure creates a gap between the amp and the installation surface that prevents accumulation of saltwater & sand
  • WATERPROOF, DUSTPROOF & SALT-SPRAY RUSTPROOF - IPX6, IPX7 & IP6X certified, the amp is protected from powerful water jets up to 12.5m, submersion up to 1m, and ingress of dirt. The ASTM B117 salt spray (or salt fog) test ensures protection from corrosion
  • DAMAGE PROTECTION FROM VIBRATIONS - The amp passes a 3-axis multi-frequency vibration test to ensure its ability to sustain vibrations. The amplifier mounting section is made of 15/64 inch die-cast material to suppress the amplification of vibrations
  • DISTORTION-FREE AUDIO - The high-quality PMLCAPs (Polymer Multi-Layer Capacitors) reduce distortions, improving the overall audio quality even at higher volumes, while the magnetic shielding for the output coils reduces radiated noise for accurate sound

Skar Audio RP-150.4ABM 1,000 Watt Full-Range Class A/B 4-Channel Marine Amplifier


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Skar Audio RP-150.4ABM 1,000 Watt Full-Range Class A/B 4-Channel Marine Amplifier

 in stock
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • 1000-Watt MOSFET 4-Channel Class A/B Power Marine Amplifier
  • RMS Power at 2 Ohms: 250 Watts x 4 Channels
  • RMS Power at 4 Ohms: 150 Watts x 4 Channel
  • Fully Marinized with Waterproof Coating on Circuit Board & Rust Proof Painting on Mechanical Case
  • User Adjustable Controls: Gain, Variable LPF, HPF, Bass EQ Switch

Pyle Hydra Marine Amplifier – Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input – PLMRA420


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Pyle Hydra Marine Amplifier - Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input - PLMRA420

$124.99
$104.99
 in stock
5 new from $104.94
7 used from $77.82
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • 4 CHANNEL BRIDGEABLE AMPLIFIER: Pyle’s PLMRA420 is engineered as a 4 Channel bridgeable marine amplifier that powers up your speaker and is universally compatible. It also has high and low electronic crossover network or pass filters
  • PREMIUM RCA INPUT: For an easier use of this hydra marine amplifier, it comes with premium RCA inputs. If your marine receiver lacks RCA output jacks, you can connect speaker output leads to the high level inputs
  • SHORT PROTECTION: Built with a heavy duty Aluminum Alloy heatsink, thermal overload speaker short protection and LED light indicator. These are to protect the amp and your vehicle's electrical system from short circuit conditions
  • POWERFUL 1000 WATT: This amplifier is powerful with its 1000 WATT maximum and dual MOFSET power supply. Comes with dual adjustable input GAIN level controls of 10k Ohm (Low) and 100 Ohm (High) speaker impedance
  • MARINE GRADE: With its Marine rating of IP-01, it is waterproof ready. It’s constructed with gold plated speaker output terminal connectors as well to combat corrosion with long term use

Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier


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Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier

$149.99  in stock
14 new from $149.99
6 used from $99.95
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • Digital Amplifier Technology
  • Speaker Level Input w/ Signal Sensing Turn-on
  • 2 Ohms Load Capability. High Pass Filter : 50Hz-200Hz, -12dB/oct (A/B)
  • Power MOS-FET Switching Power Supply
  • 1m (3.3ft) RCA Cable

Pyle Hydra Marine Amplifier – Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier, Waterproof, 12 volt, Dual MOSFET Power Supply, GAIN Level Controls, RCA Stereo Input & LED Indicator – PLMRA400


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Pyle Hydra Marine Amplifier - Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier, Waterproof, 12 volt, Dual MOSFET Power Supply, GAIN Level Controls, RCA Stereo Input & LED Indicator - PLMRA400

$52.52  in stock
3 new from $52.52
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • PREMIUM 4 CHANNEL AMPLIFIER: Pyle’s PLMRA400 is engineered as a 4 Channel marine amplifier that allows high quality stereo reproduction from source. This will power up your speaker and be universally compatible with a variety of head units.
  • RCA STEREO INPUT: For an easier use of this hydra marine amplifier, it comes with premium RCA inputs. If your marine receiver lacks RCA output jacks, you can connect speaker output leads to the high-level terminal inputs.
  • SHORT PROTECTION: Built with a heavy duty Aluminum Alloy heatsink, thermal overload speaker short protection and LED light indicator. These are to protect the amp and your vehicle's electrical system from short circuit conditions.
  • POWERFUL 400 WATT: This amplifier is powerful with its 100 WATT x 4 max or 400 WATT and dual MOFSET power supply. Comes with dual adjustable input GAIN level controls between 1-300mV and 4 or 8 Ohm speaker impedance.
  • MARINE GRADE: With its Marine rating of IP-01, it is waterproof ready. It’s constructed with gold-plated speaker output terminal connectors as well to combat corrosion with long term use

Pyle 800W 4-Channel Hydra Marine Micro Amplifier – Waterproof – GAIN Level Controls – RCA Stereo Input – 3.5mm Jack – MP3 – Volume Control – Short Protection – For Boat & Vehicle Use – PLMRMP3B


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Pyle 800W 4-Channel Hydra Marine Micro Amplifier - Waterproof - GAIN Level Controls - RCA Stereo Input - 3.5mm Jack - MP3 - Volume Control - Short Protection - For Boat & Vehicle Use - PLMRMP3B

$63.19  in stock
3 new from $63.19
5 used from $43.88
Free shipping
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as of November 1, 2025 11:41 pm

Features

  • Included Components: 1 Pyle Branded Product
  • RCA STEREO INPUT: For an easier use of this hydra marine amplifier, it comes with premium RCA inputs. This also includes a 3.5mm-to-RCA adaptor so you can connect your device and a remote for volume control.
  • SHORT PROTECTION: Has a built-in power protection circuitry and soft turn on/off. These are to protect the amp and your vehicle's electrical system from short circuit conditions.
  • POWERFUL 800 WATT: This amplifier is powerful with its 800 WATT maximum power supply. Comes with adjustable input GAIN level controls of 2 to 4 Ohm speak. It’s also waterproof marine grade.
  • Included Components: 1 Pyle Branded Product

Stinger Audio MT-600.4M 1000 Watt RMS 4-Channel Compact Marine Audio Amplifier, Class D, Hexfet Mosfet, Water-Resistant, Crossover High-Pass/Low-Pass Filters


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Stinger Audio MT-600.4M 1000 Watt RMS 4-Channel Compact Marine Audio Amplifier, Class D, Hexfet Mosfet, Water-Resistant, Crossover High-Pass/Low-Pass Filters

$169.00  in stock
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • -: Packs a powerful punch with high efficiency and an incredible small form factor.
  • : Built to the highest standards for lasting reliability.
  • : Designed to provide superior performance and unmatched efficiency.
  • : Reduced on-resistance, faster switching speeds, and unparalleled reliability.
  • : Decreased resistance for higher power transfer and efficiency.

BOSS Audio Systems MC900B 4 Channel Amplifier for ATV UTV Car Marine – 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer


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BOSS Audio Systems MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer

$134.99  in stock
8 new from $134.98
1 used from $182.96
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • Power - 125 Watts Max x 4 @4 Ohms, 94 Watts RMS x 4 @4 Ohms
  • Specs - Dimensions - 1.75” x 6.6” x 1.75”, Weighs 2.9 lbs.
  • Bluetooth - You do not need a head unit. Just power up the MC900B and hook up some speakers to it. The included Bluetooth remote control lets you stream your music via your Bluetooth device and use apps like Spotify and Pandora
  • Auxiliary in - The Bluetooth remote is compatible with the audio output from smartphones as well as MP3 players. Just plug in and start playing
  • USB Charging - You can charge your USB devices using the USB charging port

Rockville RXM-F3 1600W Peak/260W RMS 4-Channel Class A/B Marine Amplifier with PA Microphone, Waterproof Conformal Coating, Smart Auto Turn-On for Boats


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Rockville RXM-F3 1600W Peak/260W RMS 4-Channel Class A/B Marine Amplifier with PA Microphone, Waterproof Conformal Coating, Smart Auto Turn-On for Boats

$87.36
$70.40
 in stock
3 used from $70.40
Free shipping
Amazon.com
as of November 1, 2025 11:41 pm

Features

  • HIGH-POWER AUDIO PERFORMANCE: Delivers 1600W peak power (65W x 4 RMS @ 4 Ohms, 95W x 4 @ 2 Ohms) with Dyno-Certified RMS ratings for clear, distortion-free sound on your boat. Bridgeable for 2 x 200W RMS @ 4 Ohms.
  • MARINE-GRADE DURABILITY: Features a conformal-coated PCB and stainless steel screws to resist moisture, salt, and temperature extremes, ensuring reliable performance in harsh marine environments.
  • PA MICROPHONE FUNCTIONALITY: Includes a PA microphone with special circuitry that lowers music volume during announcements, ideal for communication on the water or coordinating with your crew.
  • FLEXIBLE INSTALLATION OPTIONS: Supports high-level and RCA inputs, auto-start smart turn-on, and 2/4-channel modes, making it compatible with any marine audio system without needing preamp outputs.
  • CUSTOMIZABLE SOUND CONTROL: Offers fully adjustable 12dB/octave crossover (high-pass, low-pass, band-pass) and 12dB bass equalizer for tailored audio, perfect for marine speakers and subwoofers.

With this, our list of best marine 4 channel amplifier has come to an end. Like we said in the earlier part of this post, we have done extensive research on these marine 4 channel amplifier. Not to mention, the prices of the marine 4 channel amplifier are also flexible. You should also check Skar Audio RP-150.4ABM 1,000 Watt Full-Range Class A/B 4-Channel Marine Amplifier one of the most sold items in the market.