JBL GTO7001E

GTO7001E - 700W, DBO, 12dB, 100Hz 700 Watt Mono Subwoofer Amplifier with built-in variable electronic Crossover, Dynamic Bass Optimization Circuit (DBO.

It comes outfitted with a variable 12dB per octave electronic crossover allowing you to optimize subwoofer tuning based on location and accompanying loudspeaker components. It also includes JBL's Dynamic Bass Optimization Circuit which provides variable filtering with adjustable Q below 100Hz.