Yea the consumer market has gone to totally integrated solutions. I'm using a $400 studio amp to drive my computer speakers, If I had my time back I would of gotten speakers with integrated power amps.
Something like these look like really good value and near audiophile level quality:
http://kellysmusic.ca/productinfo~s~STU ... 187703.htm" onclick="window.open(this.href);return false;
The main difference between the speakers above and a traditional system is that the ones above have separate amplifiers for highs and lows that are perfectly matched to the drivers. With the highs and lows powered separately there is less interaction between the two and thus less distortion. I wish I understood it better to explain it better. You also don't get any power loss from cabling between the amp and the speaker drivers. In the past decade most of the mid range pro PA systems have gone this way. Well the larger systems have almost always had separate amps for high, mid, low and sub. The new trend has been to put the amplifier right in the back of the speaker cabinet.
Outdoors having the amp built right in doesn't work out so well do to moisture and cooling issues. Sure you can make an amp that is totally sealed but then you have trouble keeping it cool. I dunno off hand if there are any good powered outdoor speakers at a consumer price.