The RF-3000D amplifier feathers huge power delivered with low heat and distortion, thanks to its class D technology. It provides Bass Boost, a subsonic filter, and a variable crossover, the big trophies can give you a wonderful and excited feelings. Specifications 1. Power supply: DC 10.5-14.8V 2. Power output: RMS 3000W a 1 ohm 3. S/N: More than: 110dB 4. LPF: 45-300Hz 5. Subsonic filter: 15-50Hz 6. Volume control for Remocon box 7. CLASS D technology 8. Dimension(L x W x H): 580*265*56 MM