The Rockford Fosgate 500 watt power mini marine amp packs 500 watts of constant power into a chassis that measures 1.6" x 4.25" x 8.3". The Rockford TM500X1br features a conformal coated board that can withstand the elements and moisture that come with off roading. This amp utilizes Rockford's boosted rail technology that essentially is like a V8 that can run on 4 cylinders, but when it needs the power, it fires on all cylinders to give you the power when you need it and efficiency when you don't. These amps were specifically designed for the powersports market and have minimal current draw so that they don't drain your charging system.