The four-channel marine amplifier is the ideal device that you were looking for. It promises a multi-element high performance even with its compact size. This incredible addition is worth every penny that you spend on it.

Product Features:
Weather-resistant and high-performance marine amplifiers deliver impressive power from a compact chassis designed to withstand outdoor environments
Marine amplifiers incorporate our latest amplifier topology that includes selectable all, high, or low-pass crossovers with variable electronic frequency adjustment for precision system tuning
Manufactured by JBL audio

Dimensions: 4"H x 17"W x 8"D
Material(s): metal