9 Best 4 channel marine amplifiers of 2025

Save up to 37% off

Best Choice

1

Garmin
Garmin Fusion AM Series Marine Amplifier, 500-watt 4 Channel, A Garmin Brand

35% Off
Main highlights

Key Features
Efficient Class-AB design with reduced distortion, protection from marine elements, and enhanced heat dissipation for reliability.

Ideal Use Cases
Perfect for marine environments, capable of powering multiple speakers or a combination of speakers and a subwoofer with superior sound quality.

Customer Praise
Reviewers consistently commend its durable build and exceptional sound clarity, even in challenging marine conditions.
Key specs
- number of channels:4
- mounting type:Surface Mount
- voltage:16 Volts DC
- dimensions:14.41 x 9.02 x 2.09 inches
- amplifier class:Class-AB
9.7

Exceptional

Our Rating

9.1
audio quality

8.7
Easy installation

8.2
worth the money
How do we rank?

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Value for Money

2

STINGER

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
9.6

Exceptional

Our Rating
3

Rockville
Rockville RXM-S30 Micro Marine/ATV Amplifier 2400w Max 4 Channel 4x150w RMS Dyno-Certified
Main highlights

High Power Output and Efficiency
Delivers 2400 Watts peak power with 600 Watts RMS for robust sound.

Versatile Marine and ATV Use
Perfect for marine and ATV environments with conformal coated PCB for durability.

Customer Praises Sound Quality
Users frequently commend its excellent sound clarity and performance.
9.5

Excellent

Our Rating
4

Pyle

Pyle Hydra Marine 400W 4-Channel Amplifier - Waterproof with Dual MOSFET Power Supply - GAIN level Controls - RCA Input - LED Indicator - Compact Design for Boat/Vehicle Audio - PLMRA402
9.2

Excellent

Our Rating
5

Pyle
Pyle Hydra Marine Amplifier - Upgraded Elite Series 800 Watt 4 Channel Micro Amplifier - Waterproof, GAIN Level Controls, RCA Stereo Input, 3.5mm Jack, MP3 & Volume Control (PLMRMP3B)
Main highlights

Key Features
4-channel marine amplifier with RCA inputs, 800W power, waterproof design, and remote volume control for superior stereo sound quality.

Ideal Use Cases
Perfect for enhancing boat, car, and outdoor vehicle audio systems, compatible with MP3, smartphones, and includes a 3.5mm-to-RCA adapter.

Customer Praise
Most reviews highlight its easy installation, clear sound quality, and reliability in harsh marine environments as top benefits.
9.1

Excellent

Our Rating

8.0
worth the money

8.0
Easy installation

8.0
Sound level
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6

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

Compact Size and Performance
The Kenwood KACM1814 is compact yet delivers powerful, clean sound at 45 watts RMS.

Perfect for Tight Spaces
Ideal for installations in small spaces like glove boxes or under dashboards.

Praised Sound Clarity
Customers love its sound clarity, especially at 4 ohms with Kenwood speakers.
9.0

Excellent

Our Rating

9.9
materials Quality

8.9
worth the money

8.2
audio quality
7

Pyle
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
Main highlights

Key Features
4-channel bridgeable, 1000 WATT power, premium RCA inputs, and marine-grade waterproofing for superior audio performance in any condition.

Ideal Use Cases
Perfect for enhancing marine audio systems, compatible with various speakers and vehicles, ensuring high-quality sound on boats or in wet environments.

Customer Praise
Most reviews highlight its durability, exceptional power output, and easy installation as standout features, enhancing their marine audio experience.
8.8

Very Good

Our Rating

9.9
Water tight

8.7
Easy installation

8.2
audio quality
8

Pyle
Pyle 1000W Bluetooth Marine Amplifier Receiver - Waterproof 4-Channel Bridgeable Audio Amp with Dual MOSFET Power Supply - GAIN Level Controls - LED Indicator - IP-01 Marine Grade - PLMRA430BT

37% Off
Main highlights

4 Channel Bridgeable Marine Amplifier
The Pyle PLMRA430BT is a 4-channel bridgeable marine amplifier with a 1000W max power, Bluetooth 2.1 connectivity, and waterproof design for universal compatibility.

Ideal for Marine and Outdoor Use
Perfect for boats, ATVs, and other outdoor vehicles needing a waterproof and weatherproof amplifier with Bluetooth connectivity and robust power output.

Praised Bluetooth Functionality
Customers appreciate the Bluetooth connectivity, allowing control via smartphones, though some experienced volume control issues with certain devices.
8.7

Very Good

Our Rating

8.7
Easy installation

8.0
worth the money

8.0
Sound level
9

Pyle
Pyle 1500W 4-Channel Marine Amplifier Receiver - Waterproof & Weatherproof Marine Grade Audio Subwoofer - for Boat & Off-Road Vehicles with Wired RCA/ AUX/ MP3 Inputs - Overload Protection - PLMTR4A
Main highlights

Key Features and Benefits
Waterproof IP-65 rating, 1200W power, 4-channel compatibility, and short protection ensure durable, powerful, and safe sound amplification.

Ideal Use Cases
Perfect for marine environments, outdoor events, and any setting requiring robust, weather-resistant audio amplification.

Customer Reviews Highlight
Most praised for its compact size, ease of installation, and exceptional durability in harsh weather conditions.
Key specs
- number of channels:N/A
- mounting type:N/A
- voltage:12V DC
- dimensions:6.03 x 3.63 x 1.93 inches
- amplifier class:N/A
8.6

Very Good

Our Rating

8.2
lasts a long time

8.2
Water tight

8.0
Easy installation

9 Best 4 channel marine amplifiers of 2025

1

Garmin Fusion AM Series Marine Amplifier, 500-watt 4 Channel, A Garmin Brand

9.1

8.7

8.2

2

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

3

Rockville RXM-S30 Micro Marine/ATV Amplifier 2400w Max 4 Channel 4x150w RMS Dyno-Certified

4

Pyle Hydra Marine 400W 4-Channel Amplifier - Waterproof with Dual MOSFET Power Supply - GAIN level Controls - RCA Input - LED Indicator - Compact Design for Boat/Vehicle Audio - PLMRA402

5

Pyle Hydra Marine Amplifier - Upgraded Elite Series 800 Watt 4 Channel Micro Amplifier - Waterproof, GAIN Level Controls, RCA Stereo Input, 3.5mm Jack, MP3 & Volume Control (PLMRMP3B)

8.0

8.0

8.0

6

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

9.9

8.9

8.2

7

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

9.9

8.7

8.2

8

Pyle 1000W Bluetooth Marine Amplifier Receiver - Waterproof 4-Channel Bridgeable Audio Amp with Dual MOSFET Power Supply - GAIN Level Controls - LED Indicator - IP-01 Marine Grade - PLMRA430BT

8.7

8.0

8.0

9

Pyle 1500W 4-Channel Marine Amplifier Receiver - Waterproof & Weatherproof Marine Grade Audio Subwoofer - for Boat & Off-Road Vehicles with Wired RCA/ AUX/ MP3 Inputs - Overload Protection - PLMTR4A

8.2

8.2

8.0

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