DESC: Proprietary Class D circuitry and MOSFET power supply deliver deep, tight bass, while the built-in crossover matches the power to your specific subs perfectly. Dual mono speaker terminals accept large gauge wire and make it easy to hook up multiple subs. A switchable phase control fine-tunes the bass output to the rest of your system for greater impact. A system distress indicator and 4-way protection circuitry keep this amp calm, cool, and collected even with loads as low as 1 ohm! Other features include variable bass boost, variable low-pass filter, and variable subsonic filter to help protect your subs. A wired remote subwoofer level control is included.