DS18 5-Chnl Amp 2x 420/4ohm Bridge SUB 900/1ohm 4 x 220 SUB 600/2ohm 4 x 130 SUB 300/4 ohm Watts RMS$399.95
DS18 5-Channel Class-D Amp Full-Range 4x 150 at4 ohm & 1x 600 at2 ohm Watt RMS IP67 Waterproof Rate$724.95