Can someone please recommend a good speaker dock with nice bass-response? Ipod gets all the love in this department but I'm not really wanting to buy an ipod right now. I'd much rather just have a good and loud speaker dock for my PSP. I am in the military and my work envvironment has a lot of background noise so I'm looking for something able to put out some volume and not sound horrible at the same time.

I have a psp-2000 btw.