Lanzar VIBE436 Viberant 2000-Watt 4-Channel High-Power Mosfet Amplifier 4 x 250W RMS at 4 OHMS 4 x 500W MAX at 4 OHMS 2 x 1000W MAX at 4 OHMS Bridged 4 x 450W at 2 OHMS RMS Electronic Crossover Network Bass Boost Circuit 2 Ohms Stereo Stable