It's just 2 RCA Jack's coming from the amp, run RCAs from the head unit to the amp, the amp turns 2 channels into 6, + 4 additional pre-amp channels for tuning additional amps. Then, from the speaker wire outputs on the amp to your speakers. Download the app, tune each speaker to your liking. Crossover, eq, fade, balance, time alignment is all done via the app. The maestro box is super small, most people just tape it to the amp, so essentially this solution gives you a single amp, powering all 6 speakers, will full dsp control. Sounds like you want to put it under your seat, so this is a much better solution than 2 amps plus a seperate dsp, and sound quality should be much better than the boss amps you liked. It's also fan cooled and D class, should stay cool under that seat.