NVX VADM4 v2 Model 4-Channel Class D Amplifier 1000W Peak, 500W RMS, 2/4-ohm Stable, High/Low Pass X-Over, for Car/Truck/Marine/UTV/Motorcycle (VADM4v2)

Day 60 after install on 2004 Jeep Wrangler. Pretty happy with this unit. It's loud enough powering 4 4Ohm speakers (Alpine and Kicker) to make my ears ring after driving for a bit. Top off the Jeep curing down the freeway at 70 MPH and the volume is still strong! Paired with an cheap head unit. And the size allowed me to install under my steering wheel nicely!

As they say it's not the size of the dog in the fight...this thing has some bite....small--think a little bigger than your cellphone case but three stacked on top of each other. really sold metal construction feel. The built is crossover is very helpful to dial in the sound you are looking for. Warning. it runs a little hot. I suggest that you install it with some sufficient air flow--just to increase its longevity and avoid a meltdown.

I purchased the NVX VADM4 for it's size. I have it residing on a 2018 Honda Goldwing. The amplifier is tiny, but incredibly powerful. It does not have auto-turn-on feature but it was simple enough to connect in to the circuit with the power connection through a relay. It is simple enough to tune and the built in crossovers work well. Some reviewers appear to discuss the heat issue when cranking up their music. It's my opinion that the issue with heat may be that the gain/sensitivity settings may be higher than should be set. In my case, the amplifiers rating is set to just a touch of 1.2V and it has more than doubled the audio levels without distortion, and more importantly, without the amplifier getting anything more than warm. Pros: Small size, great amplifier Cons: Tends to pop when not using a remote line delay-relay during it's on-cycle.

7/5/2021 Update After 1.5 years, the amp not only failed on me, but also caused a scary, terrible electrical smell. In those 1.5 years, the amp was barely used because of the pandemic. I would say it ran maybe 4 hours, and that would be generous. The amp was installed inside the boat, and the boat itself was stored in my driveway with a cover. The manufacturer’s website had abundant strict language saying they basically wouldn’t do anything in my situation, which leads me to believe this probably happens a lot. Unfortunately, I bought 2 of these. I ended up replacing them both with 2 MTX MUDD100.4, which is basically the same output, and I only paid $225 for them, which is not much more than what the NVX goes for today. Back when I bought the NVX, they were only $150, which seemed to be a bargain. Now that they’re basically the same price as the MTX, you may as well get MTX’s solid reputation. From now on, I’m no longer getting off-brand stereo equipment. They just don’t last. To put it in perspective, I used to have a NON-marine grade JL Audio amp in that same location that lasted 10 years! And it still works except for 1 channel! And that was NON-marine grade! The supposed marine grade NVX lasted just a fraction of that time and completely burned out. Do yourself a favor and spend a few extra bucks today to save yourself from an eventual electrical fire and replacement a year later. —————————————————— Original Review I never heard of NVX before, so I did some research and found that they are a reputable company. YouTube dynos show that they exceed their rated specs, so I went forward and got one to power my Wetsounds REV8’s (bridged to 2 channels). This amp has a really small footprint, which makes mounting in limited spaces very easy. I was skeptical at first when running this at a very low volume and the amp getting really hot to the touch! I would run the speakers at a whisper and it would still be super hot! I did some more research and I saw that amps can run above 130 F and would be considered just fine, yet this temperature would be pretty much unbearable to touch. I also read that small amps will run very hot. Knowing this, I kept with it. Despite the heat this thing generates, I rated this 5 stars because it sounds absolutely spectacular. Previously I had a MBQuart amp powering these speakers, and they would always have a bit of static in the background. With the NVX, static was completely absent, and the REV8’s would sing very loud, but very clear with no distortion. I was so impressed with how they sound, I just ordered a second amp to power my in-boat speakers. I plan to run 2 pairs of speakers in parallel on 2 channels for a 2 ohm load, and another pair on the last 2 channels for a 4 ohm load. They are currently powered by a JL Audio 6 channel amp (one of channels went out), which has the same static that the MB Quart amp had. I’m hoping the NVX will finally rid this for me, and I’m also hoping they’ll make my speakers sound as clear as the REV8’s. Long term reliability is still in the air for me, so I’ll update if I run into any issues. So far though, NVX is now my “go to” amp, and I have owned JL Audio, Kenwood, MB Quart, Rockville, Planet Audio, Cadence, and Profile amps in the past. Their price is near rock bottom, sounds fantastic, has a tiny footprint, and everything I’ve read on them is positive. The big name companies should watch out..

Ive got 2 of these amps. One in my Harley and one in my boat both powering DS18 ZT6PRO's. Sounds great, never really get warm enough to cause concern. Great little powerhouse of an amp!

Powerful compact amp! Sounds good on my 6.5 marine speakers made by Skar. The only thing is, it stopped working after having it for about 2 1/2 weeks and only 3 days of use. Customer was cool they are refunding me the purchase price less the taxes. I'm going to purchase again and see if I have the same problem again, because as I stated it is a very small powerful amplifier. It is truly the size of a phone. I also have the VAD10001 made by them that is a beast!

Works great on my 2018 roadglide, very easy to install and fits perfect under the head unit! Amp has plenty of power to handle the two front and I’m sure it has plenty enough power to handle bag speakers if you want. Only have gain up 1/8 of the way and it jams out!

Absolutely love these amps! I ordered one last year to put in a friends Moke and it absolutely screamed! I just ordered a second one to install in my golf cart as part of the stereo upgrade, I’m running twice as many speakers as the Moke so I imagine this will sound even better! I love how compact these amps are, they are perfect for golf carts that have minimal space.

Gran calidad de sonido y potencia, lo instale con dos bocinas marinas de 8" Vega y funciona excelente