Doesnt make power chords any better.
are you thinking of bar chords?
Power chords are lame.
You have an electric acoustic? Or a hollow-body? I prefer the hollow-body guitars, myself. Similar concept, but not quite as loud.
i have all types. let me list:
acoustic(my moms really old one from mexico)
acoustic electric (ibanez)
steal (its hand made from a long time ago from my grandpas brother)
hollowbody (epiphone sheraton, like a 335)
piezo/magnetic (the one i posted)
electric (kramer fly)
the piezo/magnetic is the most expensive one i have, being that it is the bestest guitar in my opinion, and it also has the piezo, making it sound exactly like an electric when its hooked up to an amp on clean. you can switch in between regular electric stereo, electric/magnetic mono, piezo, or piezo+elec/mag.
its fun to put on a metal sound and set it to elec/mag+piezo, its a really hard, yet buzzy, sound.