The 5 Best 400 Watt Marine amps (2023 reviews)

It is important to have the well suited 400 watt marine amp. In the following post, we will help you to select the best 400 watt marine amps.

Our review process: Show/Hide

Our Top Picks:

Pyle 400 Watt Marine Amp Buy: READ REVIEW

Pyle Marine Amplifier Buy: READ REVIEW

NVX 400 Watt Marine Amp Buy: READ REVIEW

Rockville 400 Watt Marine Amp Buy: READ REVIEW

Garmin 400 Watt Marine Amp Buy: READ REVIEW

Pyle 400 Watt Marine Amp

Buy on Amazon

If you often find yourself scrambling for appropriate and satisfactory amp, pyle 400 watt marine amp should be your first option for buying. Pyle’s Plmra430bt is engineered as a 4 channel bridgeable marine amplifier that powers up your speaker and is universally compatible. It is powerful with its 1000 watt max and dual mosfet power supply. The front speakers are connected via 2 of the Aoshike 400W Adjustable Multi Speaker Treble/Bass Audio Frequency Divider 2 Way Crossover Filters. It comes with dual adjustable input gain level controls between 4 to 8 ohm speaker impedance.

This amp sounds pretty good when paired with the right speakers as with any setup. The amp does connect to phones and music players with Bluetooth capability. It's perfect for the small amount you pay for it worth buying.

• Very good, handy having the high input pig tails for easy set up
• Powerful 1000w (peak) and bridgeable 4 channel bluetooth amplifier
• Bluetooth hooked up nicely and has a good range
• Water resistant but not water proof

Pyle Marine Amplifier

Buy on Amazon

The pyle marine amplifier is capable of outshining several other amp featured in this list in overall features for the price point. This is a great amp for a cooler radio. It's easy to install, working well with remote volume. It provides decent sound and has plenty of power for factory gm 6.5 speakers, but there is a constant hiss coming through the speakers when nothing is playing through it. It has waterproof external volume control and aux input. It fits perfect in a playmate cooler.

This will power up your speaker and universally compatible with a variety of head units. It is easy to install, working well with remote volume. They do get very hot, and require good ventilation in the install.

• Performs well for its intended application
• Paired with a solar charger so no battery charging for the radio
• A lot of sound great for a golf cart

NVX 400 Watt Marine Amp

Buy on Amazon

The nvx 400 watt marine amp should be able to handle its purpose and duties with ease. Whether you are installing it in your motorcycle, utvs, atvs, boats, and golf carts, the marine-v series amps will take up little space. These are class-d amplifiers, meaning they run at or over 90% efficiency. It fits in very small spaces. At normal volume levels, it is cool to the touch and only gets hot when you really push it hard.

This amplifier is rated for 50 watts RMS at 14.4 volts per CEA 2006 compliance. It is perfect for softails or 4 speakers. The Marine-v series amps are capable of being installed anywhere and everywhere in your vehicle. It is made for an extremely limited work space.

• Tiny little amp perfect solution for upgrading factory amp
• Lot of satisfied buyers

Rockville 400 Watt Marine Amp

Buy on Amazon

The rockville 400 watt marine amp is capable of outshining several other amp featured in this list in overall features for the price point. It features the Krypton mf4 to add to that features talk-over functionality. It is a class 4-channel high power amplifier with 2, 400 watts peak output and 600 watts dyno certified rms power. It has a very cool fully adjustable 12db/octave crossover. It lets say to 3khz and then you can set the high pass to 150hz and your midrange speakers will only play that frequency range.

The Krypton mf4 is protected by a fully ic controlled circuit which includes mute, delay and soft start technology so that the amplifier will turn on safely every time and protect your speakers from popping. All screws and mounting hardware are stainless steel and rustproof, Bottom panel is aluminum and rustproof. It features about this amp is the marine public address system.

• Outstanding noise rejection, accuracy, and frequency response
• Gauge high current, low impedance, light blue, flexible ground cable
• Fully adjustable 12db bass equalizer, adjustable input level control
• Status mode led indicators, minimum thd at rated power

Garmin 400 Watt Marine Amp

Buy on Amazon

The AM Series marine amplifiers are purpose-built for the marine environment. Designed for quality audio amplification on the water, the AM Series 2 channel amplifier can power up to two pairs of speakers, or one subwoofer with its. It features built-in variable bass boost, a subsonic filter and variable crossover filters for enhanced performance and system protection. It provides added protection from salt air and moisture to ensure maximum product life.

The Class-A/B design of the 400 Watt 2-ohm stable (per channel) design ensures clean and powerful amplification of the input signal, enough to rock the boat. The RCA line out and Pass through RCA output enables linking of multiple amplifiers for enhanced system performance 2 channels capable of powering 2 speakers, a sub (bridged) or 4 speakers in parallel. It provides greater dissipation of heat for enhanced component reliability.

• Sounds really good powering the 8.8 fusion tower speakers
• Sounds great and works well the cushion black box radio
• Key features include class-ab amplifier design, conformal coated pcbs and heat sink