Stetsom STX 2448 DSP Crossover Equalizer 4 Channel + SAME DAY SHIPPING FROM USA!
It has an integrated equalization system, with 15-band graphic equalizer, manual tuning or through 12 presets (Flat, Loudness, Bass Boost, Mid Bass, Treble Boost, Powerful, Electronic, Rock, Hip Hop, Pop, Vocal and Pancadão).