The typical receiver manufacturer puts about $20 into each amplifier channel, and they sound like it; the sound quality is SO much worse than even a low-priced Cambridge integrated amplifier that the choice seems clear if good sound is an issue of importance.
Given the 3rd-rate sound of most modern HT receivers, why not a good integrated amplifier, where the money has been strictly put into the sound quality instead of a lot of "bells and whistles" features that have nothing to do with sound.
There are a few good-sounding integrated amplifiers in the range of $800-$1600 dollars, but there is ONE (and only one, that I know of) for less that sounds very good.
It is the Music Hall A15.2, which is absolutely exceptional for its price. Music Direct is selling it now for $499, which is a bargain (it was $800). (I see that blackscorpio also recommended it...).