I just bought a Sony CDXF5700 head unit for my '95 325I 4dr and I want to get an amp and sub. I'm not sure what type of amp to get, (multi channel, mono, etc.)
I know that the stock speakers aren't that good, everytime I play anything with bass and I try to turn it up, the speakers just make it sound really bad.
so i thought if I added a sub, it make the whole thing sound a lot better. I'm just thinking about a single 10" sub in the back, nothing too big and fancy.
So let me know what type of amp and sub to get. Or if you have anything that might fit what I want, pm me.

Thanks alot