I know nothing about audio.... all i know is that i have:

- Sony CDX-CA700X
- Pioneer TS-A1161 (front)
- Pioneer TS-A6975 (back)

What Amp/watts is good enough for me? The problem im experiencing is sound distortion, with increased volume. I want to be able to listen louder, w/o distortion. I dont plan on getting a subwoofer, but if i ever decided to, will the Amp i choose now have an effect on which sub im able to use later? How much will a decent amp cost? As you can tell by my speakers, i dont need the best or even near best, just good enough. Am i able to install an Amp myself? I didnt install any of the rest of that.

thanks
Sean