We have spent around 26 hours to find the right option for you and based on our research 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) 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 amplifier 4 channel, together with their features and functions.
As you read, through the article, you will understand some of the top marine amplifier 4 channel and learn more about their features. Let’s proceed without wasting any more time.
Best marine amplifier 4 channel

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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
$35.00 in stock
1 used from $41.53
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 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)
$99.99 in stock
14 used from $41.66
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
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
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
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"
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
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)
2.1 Bluetooth Marine Amplifier Receiver – Waterproof 4 Channel Wireless Bridgeable Audio Amp for Stereo Speaker with 1000 Watt Power Dual MOSFET Supply, GAIN Level and LED Indicator – Pyle PLMRA430BT
2.1 Bluetooth Marine Amplifier Receiver - Waterproof 4 Channel Wireless Bridgeable Audio Amp for Stereo Speaker with 1000 Watt Power Dual MOSFET Supply, GAIN Level and LED Indicator - Pyle PLMRA430BT
$128.99 in stock
8 used from $59.48
Features
- 4 CHANNEL BRIDGEABLE AMPLIFIER: Pyle’s PLMRA430BT is engineered as a 4 Channel bridgeable marine amplifier that powers up your speaker and is universally compatible. It has a bridge mode selection switch and high or low electronic crossover network
- 2.1 BLUETOOTH CONNECTIVITY: Built with 2.1 Bluetooth connectivity that has a wireless range of 25+ feet. Compatible with all Bluetooth devices like iPhone, Android, iPad and tablets. It even has a smart auto connect that remembers device pairing info
- WATERPROOF & WEATHERPROOF: The audio amplifier is waterproof with its marine grade rating of IP-01. It’s constructed with silver-plated stereo speaker output terminal connectors to combat weather corrosion with long term us
- 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 receiver is powerful with its 1000 WATT MAX and dual MOSFET power supply. Comes with dual adjustable input GAIN level controls between 4 to 8 Ohm speaker impedance
Marine Bluetooth Amplifier 4 Channel Class D 800W Amp Stereo on Boats UTV ATV Golf Carts and Cars
Marine Bluetooth Amplifier 4 Channel Class D 800W Amp Stereo on Boats UTV ATV Golf Carts and Cars
Features
- Waterproof Marine Bluetooth Amplifier (No head unit required) & 3 m Wired Remote with 3-color LED indicator (sources - USB/AUX/Bluetooth). Wired Remote with S-terminal connector, please ensure the cable connection is always tight.
- Marine Amplifier with Controller, hidden stereo
- Bluetooth Amplifier with wired remote controller
- Bluetooth Streaming, Boasts Power 60W x 4CH
- Elegant Design, Solid Materials, Durable
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)
5 used from $39.13
Features
- PREMIUM 4 CHANNEL AMPLIFIER: Engineered as a 4 Channel marine amplifier that allows high quality stereo reproduction from source. This will power up your speaker and universally compatible with a variety of head units like MP3 and smartphone.
- 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
BOSS Audio Systems MR1000 4 Channel Weather Resistant Amplifier – 1000 Watts, Full Range, Class AB, 4 Ohm Stable, RCA Inputs, Bridgeable
BOSS Audio Systems MR1000 4 Channel Weather Resistant Amplifier - 1000 Watts, Full Range, Class AB, 4 Ohm Stable, RCA Inputs, Bridgeable
Features
- Power - 250 Watts Max x 4 @2-Ohms, 125 Watts Max x 4 @4-Ohms, 500 Watts x 2 @4-Ohms Max Bridged
- Weather Resistant - The MR1000 has been designed to handle some light weather conditions without giving up on you. It is great for use in ATVs and boats
- Class A/B Topology - Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal
- Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers
- Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier
Kicker 42PXA3004 PXA Series 4 Channel Amplifier for Car Audio Speakers, 75 Watts Per Channel, 150 Watts Bridged, Black
Kicker 42PXA3004 PXA Series 4 Channel Amplifier for Car Audio Speakers, 75 Watts Per Channel, 150 Watts Bridged, Black
Features
- Kicker PXA300.4 - 4x75-Watt Full-Range Amplifier
- Small Footprint, mount almost anywhere.
- PXA Amps utilize a speaker level (amplified) or low (pre-amp)-level input
With this, our list of best marine amplifier 4 channel has come to an end. Like we said in the earlier part of this post, we have done extensive research on these marine amplifier 4 channel. Not to mention, the prices of the marine amplifier 4 channel 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.