< p> 1-channel subwoofer amplifier with class D circuit, integrated active crossover and black anodized heatsink< br> < br> Mono amplifier< br> Class D technology< br> Variable active crossover and bass boost, phase shift< br> Stable power supply< br> Large terminals< br> Black anodized heatsink with Ground Zero lettering< br> Bass remote control included< br> High-level input with auto-on function< /p>