I'm considering getting a power amp at somepoint in the future, and I'd like to know what my options are. My main speakers have a label on the back stating that they are rated to accept 200 Watts max, while the others are rated to accept 150 Watts. I'm thinking of getting a nice 7-channel Emotive/Outlaw/etc power amplifier, and using my existing receiver as the preamp for a while. The speakers are very efficient, so I imagine the amp won't be anywhere near its limit before it's too loud. My question relates to the power handling - if I purchase a 200 Watt/channel amp, is there a danger of harming the speakers that aren't rated for that? Also, if I bi-amp my main speakers, is there 400 Watts there to damage the 200 Watt speaker? Should I just stick to the 100-150 range?