NVX MVPA4 | Marine-V Series 4-Chan Class-D Compact Amplifier


Marine-V Series 600W RMS 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

Marine-V Series 600W RMS 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

• 4-Channel Micro Class D Amplifier
• 100W x 4-Chan. @ 4 ohms
• 150W x 4-Chan. @ 2 ohms
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!


List price $399.99
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Purchase a qualifying amplifier and save 50% on an NVX XKIT44 True Gauge OFC amplifier installation kit. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.


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For a limited time, save $10 on a roll of NVX SDVK4 Sound dampening with a qualifying purchase! Sound deadening will eliminate rattles and improve the sound and output of your system! This offer cannot be combined with any other coupons or offers.


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Big Power in a Small Package

Don’t let the size fool you! The Marine-V Series Amplifiers packs a massive punch when it comes to power. NVX knows how important space is when installing anything aftermarket. The Marine-V Series Amps are capable of being installed anywhere and everywhere in your vehicle. Whether you are installing it in your motorcycle, UTVs, ATVs, boats, and golf carts, the Marine-V Series Amps will take up little space. Amplifiers of similar size produce half the power output compared to other amplifiers on the market. The MVPA2 and MVPA4 amps both boast an output of 600W RMS, while the slightly larger MVPA6 boast an output of 900W RMS.

Built to Withstand the Elements

The Marine-V Series Amplifiers are created for outdoor vehicles. NVX wants to make sure your amplifier is safe no matter the application. Most amplifiers on the market claim to be meant for boats, motorcycles, and other outdoor vehicles, but lack any real measures to protect their amps. NVX’s marine amplifiers are truly ready for the elements and have an IPX67waterproof rating. This is due to their conformally coated circuit boards and carefully designed sealed aluminum chassis.

Class-D Technology for Efficiency & Performance

The Marine-V Series amps are Class-D amplifiers, meaning they run at or over 90% efficiency. This efficiency is extremely high compared to Class-A/B amps, which run at less than 78% efficiency. So, what does this mean for you? This translates to smaller heat shrinks, less power draw from your vehicle’s charging system, and it makes smaller internal components possible, allowing the overall footprint of the amplifier to be smaller as well. Therefore, being a Class D amplifier allows these amps to waste far less energy and pack more power into a smaller chassis.

Designed with 3.5mm AUX Signal Input

All Marine-V Series Amplifiers are fitted with 3.5mm AUX signal input to work seamlessly with NVX’s Bluetooth controllers (like the XUBT4 or XUBT3). This also allows you to have a direct connection to your device’s headphone jack. As an added bonus, all Marine-V Series Amps come with a bass knob, allowing you to have full usage of a subwoofer if you decide to bridge two channels together.

Product Details:

  • Marine-V Series 4-Channel Class D Amplifier
  • RMS Power Rating:
    • 4 ohms: 100 watts x 4 chan.
    • 2 ohms: 150 watts x 4 chan.
    • Bridged, 4 ohms: 300 watts x 2 chan.
  • IRS Full Class-D Topology Offers Efficiency & Performance
  • Designed Specifically for all Powersport, Marine, Motorcycle Applications
  • Conformal Coated PCB and IPX67 Waterproof to Withstand Outdoor Elements
  • Ultra Mini Size For Easy Installations
  • Surface Mount Component Technology
  • Audio Precision Quality Control Verification
  • Stable & Reliable Four Layers PCB Trace Layout
  • Power & Protection Led Lights Status Indicator
  • Short Circuit Thermal and Voltage Protection
  • Top Tune Controls Access
  • Multi-Input Aux in & RCA
  • Bass Remote Control Knob Included
  • Input sensitivity:
    • Level: 0.2V-10V
  • Frequency Response: 20Hz - 20kHz
  • Variable high-pass filter (40-400 Hz)
  • Variable low-pass filter (40-400 Hz)
  • CEA-2006 compliant amplifier
  • Dimensions: 9.7"W x 4.4"L x 1.7"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

NVX VADM4 thumbnail
(newest, current model)
NVX MVPA4 thumbnail
(previous model, replaced by NVX VADM4)
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
100 watts x 4 channels
RMS Power @ 2 ohms
150 watts x 4 channels
Bridged RMS Power
300 watts x 2 channels
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
200 watts x 4 channels
Peak Power @ 2 ohms
300 watts x 4 channels
Bridged Peak/Max Power
600 watts x 2 channels
Amplifier Specifications
Amplifier Series
Marine Certified
Amplifier Class
Number of Channels
Total Peak Power Output
1200 watts
Total RMS Power Output
600 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
40 - 400 Hz
Low-Pass Crossover Frequency
40 - 400 Hz
Signal-to-Noise Ratio
>90 dB
Bass/Gain Remote
Fan Cooled
Fuse Rating
30A x 1 
CEA-2006 Compliant
Sonic Certified Amplifier
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
User manual
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
  • NVX MVP Micro Amplifiers | MVPA1 & MVPA4 Car Audio Amps
  • NVX MVPA4 Amplifier Dyno Test | SMD D'Amore AD-1
  • NVX MVP Micro Class-D Car Amplifiers
  • How To Install an Amplifier: Car Amplifier Basics Part 2




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By feature average rating



January 12, 2015

hard little hitter

I bought this because of the size and specs, its pretty easy to in stall.
The amp was for a motorcycle, hooked it up to two 6x9 5way pioneer speakers and it sounds great.
Pros: good amp, love the performance
Cons: length and width were fine but just a little thicker than anticipated. Wouldn't fit under my shield so I had to put it in my saddle bag


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The Master

July 27, 2014


Only upgrade to this amp would be the NVX JAD series or the JL audio HD400v2 Based on SN/ and THD, on my car with power seats this amp fits perfectly without getting in the way of me moving my seat back. Since the amp does get hot since its so ultra tiny under the seat is a good place. You wont be able to tell the sound quality apart unless you buy some really expensive speakers with high end tweeter. I got the P65c3 with Flac files from my phone and the Jl audio line booster I got my factory stereo to give out 8volts High input of power before distortion into the MVP4A , With the car on I got 12.4Volts out from the MVP4 with no speakers attached b4 distortion about 38watts, my load though is 3.5ohms so I get a little more than that wich is more than enough loudness .

you wont find another 100+SN amp at this price and this small - I cant wait for their next version .


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November 10, 2014

Great amp!

Bought this amp to install in an ice chest radio. I have it paired up with a pair of 6.5" wet sound speakers and this little amp performs great! Would definetly purchase another.


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August 18, 2014

Great little amp!

I just hooked this amp up on my motorcycle after my Kenwood KAC-1502S amp finally stopped working (after 3 years in a saddlebag). I have (2) 5.25" JL Audio speakers up on my bars in a PVC tube enclosure. Let's just say that this amp rocks those speakers! You can spend your $700 - $1000 on those Hawg Wired/J & M Rokker amps/speakers (Harley guys!). For a fraction of the cost, my setup sounds better (IMHO). Going to buy another one to do the same on a bicycle (will add 2 more speakers). I will be the 'entertainment' portion of the bike trail/stops along the way. For, this setup gets insanely loud, and still sounds crisp/clean. So far, the amp just gets warm to the touch (even in a saddlebag). The PVC tube speakers may not be the 'cleanest/most aesthetic looking' as chrome bullet speakers, but they sound way better. I painted them a satin black. They look just fine. And, sound even better!!!!


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May 15, 2014

Very good unit

This unit is one of the smallest amps with power and I am amazed on its performance. They did a great job on making an amp you can fit into tight places and have some speaker power. I installed this on my Harley Ultra Classic next to the CB module, it is that small. It is smaller and more powerful and half the cost of Hogtunes and J&M 360 amps which I had both. Hogtunes does have a nice design which has the by-pass to daisy chain another amp when using more the 4 speakers at 2 ohms which is nice maybe Sonic could add it in the future amps. Still very nice amp people! I would buy another one ..


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February 10, 2014

Another great product from NVX.

I use this and the MVPA1 under the dash in my 2011 F150. I was apprehensive at first powering all 4 of my 2ohm door speakers. No reason to be. It works great. I also bought the NVX 8ga wiring kit. With the amps under the dash I had lots of wire left over. Be aware that it is difficult to get a 10ga connector on to the amp let alone an 8ga. I used one 8ga from the batt then split into 2 10ga for the amps.


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August 10, 2014

Lots of power in a small package

I used this on my motorcycle, Harley roadglide, it fit just on top of the factory radio. It's a nice upgrade if your also upgrading your speakers.
It gets very loud.


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March 17, 2015

Powerful for its size

I upgraded my H D Electra Glide Classic with an amp and four speakers. The installation went smoothly as this was my first time and the instructions were easy to follow. The only problem I had was the adjustment screw on the far right was stripped and blew out my speakers. I installed a second set of speakers and attempted to make an adjustment by turning the screw counter clockwise. The results were the same: blown speakers. The agent at Sonic suggested that I find a shop to repair it myself before returning . I'm not satisfied


found this helpful.

Pete mack

September 4, 2014


I used this mini amp to boost the power on a 40 watt mono pa on o tour boat. I used it in the bridged configuration hitting it with the hot signal from the pa then into a barely 4 ohm load. Under a full load, music, for a couple hours it got pretty hot but did not shut down. Normaly the pa use is off and on so in that it could take the full load it will hang in there for the normal use. The size was great our space was limited. It was the only 12 volt amp I could find that could handle the hot signal so I could daisey chain it. The output binding block is kinda a pain, so small. Other wise thumbs up !!!


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December 27, 2014

I had the last laugh

My installer laughed at this little amp (and me) almost to the point to where I got angry and took my business elsewhere. But when the last wire was connected and the system was powered on. OMG the look on their faces was priceless. Clear and very powerful. I had a smile from ear to ear, and I was so happy I had the last laugh.


found this helpful.


June 9, 2014

Is this for real?

I ordered this amp as part of my NVX system. I am new to the brand and I was unsure of what to expect all around. This little amp has surprised both me and my installer alike. How can something so small produce so much power? It is simply incredible. The amp is so small I have it mounted under the passenger seat of my Mazda. My immediate concern was that the small size made it impossible to prevent overheating as there could not be much of a heat sink. After driving it hard for 4 straight hours I found it only warm to the touch. The finger melting heat I had expected did not materialize. I cannot say enough about this amp. I would not hesitate to recommend this to friends and family.


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February 14, 2015

Impressive performer

I bought this amplifier to use in an audio upgrade for my Honda Gold Wing F6B. I used the front 2 channels to power a set of the Polk Audio MM series 5.25" component speakers and I bridged the rear channels to power a single JL Audio 6.5" Micro Sub. I had read the reviews and watched the Youtube videos and decided to give it a try. Looking at the performance specs., I was sure it should do the job. I was for sure interested in the piece for the small size and lack of space it would require to install. I have previously used a Kenwood Excelon XR400-4 on another of my bikes and was very happy with it. I was hopeful that I would not be disappointed with this unit. Long story short, it works very well and provides plenty of power in my application. I would highly recommend it to someone and I have. Because of my recommendation, at least two others have purchased this amp. Very strong performer. I can't really give a true evaluation of durability as it has only been a month or so.


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May 11, 2014

Great Value

I bought a pair of these speakers for the price thay are the best speakers I have bought in a long time the v series have good bass and treble power and clear sound you can hear all the of the music great I would tell a friend about the speakers you will not be unhappy with this product at all I also have a 400 watt amp on the speakers great speakers .


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February 8, 2015

Mighty Mouse

This little amp will have you installer laughing their butts off. That is until it is wired up and powered on, then Mighty Mouse will knock that smile right off their face. Unbelievable little amp.


found this helpful.


July 18, 2014

Amazing sound !

Will be installing this in our 2010 f150 behind the dash, to improve overall sound compared to factory headunit power. I set this amp up on my Testbench hooked up to oscilloscope and dd1 to the outputs with load resistors on all four channels to prove it's rated output and it was what nvx stated, all at 14.4 volts. Was slightly less at 13.6 volts but minimal. As far as sound quality goes I compared sound to my ppi art series a200, ppi 2030m ( both high quality old school amps) and honestly could not tell difference in sound ! And as far as size goes you could install this nvx amp almost anywhere. Actually have this running on my Bose home audio speakers which are 8 ohm , no problems ..


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Marine-V Series 600W RMS 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier


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