The PowerChiton series of weatherproof amplifier modules represent a new approach to outdoor audio systems. Combining a high performance, passively cooled amplifier with a IP66 rated, low profile enclosure, the PowerChiton offers the system installer or designer a new solution for the problems of distributed outdoor audio system design. Each PowerChiton monoblock amplifier module is capable of powering an at two-ohm load and therefore can drive one, two, or three eight-ohm loudspeakers. Due to the efficient design of the amplifier module, only a passive radiator is needed for cooling and there are no moving parts in the module, reducing failure points.