Which one defines sound: Pre amp or Power amp?


I'm just wondering which component would influence the sound that comes out of the speakers more?

I have a Rotel 5chx120w 8 ohm power amp, Yamaha rxv1800 receiver and Energy RC-70 speakers for HT. I'm trying to make use of what I have and want to dable in a 2-channel setup.
Here are my options:

a) Buy a Mcintosh mc 252 power amp and use my receiver as the pre-amp.
b) Buy a Mcintosh c2200 pre amp and use my current amp(Rotel).

Which one would yield me a better overall sound?
veltraz81

Showing 1 response by avrij

your experience probably demonstrates that few of us can actually detect the extremely thin margin of difference amps of decent power make in the sound of good speakers.