DS18 1-Channel Fullrange Marine Amplifier - NXL-X1500.1FR 1500 Watts Rms @ 1-ohm. DS18 Monoblock Subwoofer Amplifier - H-KO10 10000 Watts Rms @ 1-ohm Bass Amp. DS18 NXL-M5 5-Channel Marine Amplifier - 4 x 150w Rms @ 4-ohm + 600w Rms @ 2-ohm.
eBay