Hifonics BRX2000.1D Brutus D-Class 1-Ohm Stable Mono Subwoofer Amplifier, 2000-Watt 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 700 @ 4 Ohms, 1 x 1400 @ 2 Ohms, 1 x 2000 WATTS @ 1 Ohm