This little amp is amazing. It provides quite a bit of punch for its diminutive size. It has the capability to run off your car's power without having to run a cable from the battery. I was already running another cable so I did run a 10ga power cable to it just to be safe but if your head unit doesn't draw too much power you are supposed to be able to use it. It is very easy to install. On one side is the speaker, power, and ground connections, on the other is RCA jacks (which can be turned into line level inputs if your unit doesn't have RCA outputs) and remote lead. Be sure to use the remote connection on the input side, the one on the output side is for connecting a second amp (as the output from most head unit remote leads is not enough for more than 1 amp). I was able to mount the amp behind the dash using included tie wraps so no need to drill anything. The amp also comes with built in low pass filters and selections for whether using 2 channel or 4 and RCA or line level input selection.

I highly recommend this amp for giving extra punch to any aftermarket speakers you buy to replace OEM factory models. I wouldn't advise for factory speakers unless your factory head unit has poor output power.

The only con I could give the amp is with the intent being to mount in a hidden location that they didn't include a remote option to control the gain. With this in mind you will have to make your gain adjustments before final mounting of the amp and putting the dash back (or wherever you mount it if hidden away). Excellent price for the amp also.