First of all, it's a very small unit. I installed it in the glove box and it was super easy to wire to my factory radio. Easy to set up with my android phone and as soon I turn it on, the difference was night and day. Using my phone I was able to remove all low frequency from my doors speakers (factory speakers) and now I it doesn't distort at high volume. I'm very happy with this Pioneer DSP, and soon I'm getting a second one for my wife's car.