Need a new amp to run my HLCD

Hi all. I have finally installed my HLCD mini's and xs-65. I have a crossfire 402 running the mids fine, but I only have an old blaupunc (sp) on the HLCD's which is dropping a channel once I turn it up.

So what I'm after is a nice amp to run the hlcd's, prob spend about $500.

Also I'm in Australia so anything I get will prob be from the U.S., could you please tell me where I get said amp from.

And lastly where do I get a test cd to tune my system?

Cheers, Ash