Conclusion: This amp is totally worth the money! Loud,very clear and awesome features. Incredible small, and easy install. I have had other more expensive amps and this honestly sound just as good if not better. I would highly reccomend this amp to everybody. My music came alive and crystal clear.
Conclusion: Got this amp because I wanted something that I could put under the center console in my Suburban, wanted to keep it looking stock. This amp fit perfectly under the console and sounds great! Very happy with purchase.
Conclusion: I've used this amp for a year now and I have not had any problems with it. It sounds great and is super small compared to other amps of the same power capabilities. The pros are the small footprint and they are real efficient and the cons are the rca inputs are cheaply made. I had to remove the rca's and the silver cap came off. But all in all I would highly recommend this amplifier.
Conclusion: I own 3 of these all bridged to a 3way active frontstage and I've been happy with them. They do close to rated but not quite what their specs say they do. They also do heat up a bit. I have mine in a place with not much air flow but I do have fans to help them cool down a bit and I haven't had any issues whatsoever. Sound quality, which is what my system is currently geared towards is pretty good, at extremely loud volumes the amps don't struggle.
Conclusion: I've recently purchased this amp and it sounds good, not great. I fried it after about a month I received it. It didnt protect until it was too late. Just sent it back. Ive replaced it with a RF T600-4 power series which is a better amp (it sounds great) but alot more expensive. Guess you get what you pay for.
Conclusion: The massive amp works great! I was already planning on getting a different amp so at the advice of my stereo guy I chose a massive brand and I'm extremely happy. Thank you to Sonic Electronix for the quality products.
SALCEDO PRO SOUND from Orlando, FL, Sonic Electronix
3 September 2011
Conclusion: I bought this amp to swap out my boston acoustics gt 4100 and i got a big surprise when i installed the massive nx4. Immediately after the hook up i was anxious to see how the massive would hold up with the 2 ohm load hook up. At first it was doing fine but after a few minutes the amp started warming up and clipping, even going into protect mode! THE VOLUME WAS TURNED UP TO HALF WAY. Man was i surprised that the GT 4100 blew the massive audio away by a long shot!!!
Conclusion: This is a terrific amp. It's durable, small and puts out nice power. I'm using it to power two 6.5" components (with 2" tweeters) and two subwoofers. It's the only amp small enough to fit in my MR2 Spyder - under or behind the seat. It has plenty of power and has never once overheated, despite having almost no air flow. I didn't know much about Massive Audio before I bought this NX4 (just that my local car audio shop liked working with them).