I have to agree widget here. A (relatively) small but high quality power amp will give much better detail and nuance, particularly in the midrange and higher frequencies, and still be able to control the woofers in 'normal' listening than any high power pro amp. Most amps like this run in class 'A' for the first few watts, and can sound amazing with vocalist at say 85-90 db.
What you're paying for with those big 'audiophile' monoblock amps nobody can afford is the quality of the sound (components) plus the horse power. Start with a small quality amp and use the sub till you can afford some behemoths.