From the internal amplifier to the speakers in the car, giving you the power and control you need. If the power isn’t enough simply add a second normal amplifier and you have the full functionality o Product Specifications: 4x60W RMS @ 4Ohm 6 Channel DSP with RCA output Full filters HP & LP 10 Band Parametric EQ Time delay S/N Ratio 102dB High – Level input Plug n play ISO cable (perfect for SOT connections) Presets available* Dedicated Android APP Dedicated iOS APP