Designed to Fusion® True-Marine standards and extensively tested for protection against salt fog, temperature, vibration and UV. The highly efficient Class-D design offers lower power consumption and higher output power than Class-AB amplifiers. This delivers more power to the connected speakers/subwoofers for a whole new level of audio performance. Features built-in variable bass boost, subsonic filter and variable low/high throughput crossover filters for superior performance and better system protection. This 8-channel amplifier can drive: 8 speakers (4 Ohm) or 16 speakers (2 Ohm), 6 speakers (4 Ohm) and 1 subwoofer, 12 speakers (2 Ohm) and 1 subwoofer or 2 subwoofers. NB! The Signature amplifiers require adequate ventilation for optimum operation.