I've been looking into getting a new amp for my set up. I currently have two RE audio sxx 12d4 in a custom box I built. But I wanted a new project so I've decided to downgrade to two massive audio kilo 12d4. My old amp was a Rockford 2500 watt power series monoblock class d. But I sold it and am working on selling the Re's. I love Rockford amps but I've been looking into nvx also. I was curious if they (nvx) are any good. Also I was wondering if the prime series is good. They will both be 1200 Watts. Thanks in advance for reviews and any ideas and advice.