You are connect it is about clean sound, but power that you don't need will not make your sound cleaner. If your master volume is at around -15 to -10, even with a 20 dB peak that THX allows for, your sound will remain "clean" during that momentary peak. People who made the point of power requirement for clean sound, often exaggerated it to get attention. Again, I am not discouraging you from getting amps, I got a few in my system too. I am just saying there is no rush, and hold out for the best deals.