Hifonics BRX1100.1D Brutus Vehicle Mono Subwoofer Amplifier Molded and angled ILLUMINATED Terminals for stress free installation access. Accu-Cross crossovers and adjustments for sound shaping. Ultra-Fi MOSFETS NGSD Next Generation Super D-Class for extremely efficient system. 1 x 450 @ 4 Ohms, 1 x 800 @ 2 Ohms, 1 x 1100 WATTS @ 1 Ohm