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 31 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, Dual Mosfet Power Supply, Gain Level Controls, RCA Stereo Input & LED Indicator (PLMRA400),BLACK 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 Kenwood KAC-M3004 Compact 4 Channel Digital Amplifier. 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
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Product Title
Score
Pyle Hydra Marine Amplifier Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier Waterproof, Dual Mosfet Power Supply, Gain Level Controls, RCA Stereo Input & LED Indicator (PLMRA400),BLACK
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9.6
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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7.8
Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
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7.4
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)
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6.7
Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier
Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier
in stock
Amazon.com
as of September 10, 2025 1:26 am
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)
Pyle Hydra Marine Amplifier Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier Waterproof, Dual Mosfet Power Supply, Gain Level Controls, RCA Stereo Input & LED Indicator (PLMRA400),BLACK
Pyle Hydra Marine Amplifier Upgraded Elite Series 400 Watt 4 Channel Audio Amplifier Waterproof, Dual Mosfet Power Supply, Gain Level Controls, RCA Stereo Input & LED Indicator (PLMRA400),BLACK
$41.99 in stock
4 new from $41.99
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
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
Infinity REF-704A 1000 W Peak (400W RMS) Reference Series 4-Channel Amplifier
Infinity REF-704A 1000 W Peak (400W RMS) Reference Series 4-Channel Amplifier
out of stock
Amazon.com
as of September 10, 2025 1:26 am
Features
- Max Power1000W Peak
- Power Output, 2 100W RMS x 4, / Power Output, 4 70W RMS x 4
- Power Output, 4 Bridged 200W RMS x 2
- Signal-to-Noise Ratio 85dB
Kenwood KAC-M3004 Compact 4 Channel Digital Amplifier
Kenwood KAC-M3004 Compact 4 Channel Digital Amplifier
out of stock
Amazon.com
as of September 10, 2025 1:26 am
Features
- PEAK POWER: Max Power 600 Watts. RMS (50 Watts x 4 @ 4-Ohm or 75W x 4 @ 2-Ohm
- RMS POWER: (50 Watts x 4 @ 4-Ohm or 75W x 4 @ 2-Ohm. High Quality KENWOOD sound you can depend on
- MARINE CERTIFIED: Conformal coated marine grade circuit board is great for any application including Car, Boat, ATV, UTV etc.
- FEATURES: KENWOOD Triangle Indicator Light, 3-Way Protection Circuitry, Balanced Inputs, Speaker-Level (high level) inputs and Selectable corossover modes
- COMPACT SIZE: Cutting Edge KENWOOD Amplifier technology allows extremely compact design. (WxHxD) 6-1/2" x 1-3/4" x 3-7/8"
NVX VAD10004 1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier
NVX VAD10004 1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier
$279.99 in stock
3 new from $279.99
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
Features
- : Offering a robust 2000 Watts of peak power, the NVX VAD10004 guarantees an electrifying audio experience, perfect for upgrading your car, truck, marine vessel, UTV, or motorcycle sound system.
- : With RMS ratings of 150W x 4 chan. at 4 ohms and 250W x 4 chan. at 2 ohms, alongside 500W x 2 chan. when bridged at 4 ohms, this amplifier delivers consistent, high-quality sound output for an immersive listening experience.
- : Fine-tune your sound with variable high-pass and low-pass filters (40 - 500 Hz), along with a variable bass boost feature, allowing you to tailor your audio to your preferences with precision.
- - : Crafted with a conformally coated, marine-grade circuit board, the VAD10004 amplifier is engineered to withstand the rigors of marine environments, ensuring long-lasting performance even in the harshest conditions.
- - : Featuring LED indicator lighting, 3-way protection circuitry (thermal, overload, and speaker short protection), a heavy-duty aluminum alloy heat sink, platinum-plated RCA level inputs, and screw terminals, this amplifier combines functionality with durability, guaranteeing an exceptional audio experience every time.
Rockville DBM25 1400 Watt 2 Channel Marine/Boat Amplifier Amp W/Silicone Covers
Rockville DBM25 1400 Watt 2 Channel Marine/Boat Amplifier Amp W/Silicone Covers
$129.95 in stock
3 new from $129.95
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
Features
- HIGH-POWER PERFORMANCE: Delivers 1500W peak and 375W Dyno-Certified RMS in a Class-AB 2-channel design, providing clean and powerful audio for marine speakers and subwoofers at 2 or 4 ohms.
- MARINE-GRADE BUILD: Features conformal-coated PCB, silicone terminal covers, rustproof aluminum heat sink, and stainless steel hardware for long-lasting performance in harsh marine environments.
- FLEXIBLE SOUND TUNING: Equipped with a fully adjustable 12dB/octave crossover, low pass filter (50Hz-250Hz), high pass filter (60Hz-1.2kHz), and bass equalizer for precise audio customization.
- REMOTE SUBWOOFER CONTROL: Includes a convenient dashboard-mounted control for quick and easy bass adjustments during boating and outdoor activities.
- COMPLETE INSTALLATION KIT: Comes with mounting screws, birth sheet, warranty card, and owner's manual, ensuring you have all essential accessories and documentation.
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)
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)
$148.99 in stock
3 new from $144.49
2 used from $94.94
2 used from $94.94
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
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
Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
$134.95 out of stock
13 new from $134.95
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
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
JBL – 4-channel, 100W x 2@ 4 ohms, full-range marine amplifier
JBL - 4-channel, 100W x 2@ 4 ohms, full-range marine amplifier
$199.00 in stock
8 new from $185.00
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
Features
- Compact Size
- High- and Low- level inputs
- Selectable Output and Variable Adjustment Crossovers
- Conformal-Coated PCB
- Variable Crossovers
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)
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)
$63.49 in stock
4 new from $59.49
7 used from $50.16
7 used from $50.16
Free shipping
Amazon.com
as of September 10, 2025 1:26 am
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
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 Infinity REF-704A 1000 W Peak (400W RMS) Reference Series 4-Channel Amplifier one of the most sold items in the market.
