Take control of your sound with the PowerBass PBX-DSP8 Digital Signal Processor. Control up to 8 channels of input and 8 channels of output with our fully integrated App. The PBX-DSP8 allows you to fine tune your audio system to your preference using our built in 32-Band Equalizer, Crossover Network, and Time Alignment allowing you full custom control of your in car musical experience. Hardware required, PBX-DSP8 Digital Signal Processor sold separately.