Small portable speaker/dock with USB input and AC power

[shadow_boxer]

Hi guys, I'm a little bit stumped here. Trying to find something like the above for the wife to listen to music too in the kitchen/bedroom etc. Ideally something as small as possible, seen a few mini hifi systems but something even smaller would be ideal. There seems to be quite a few bluetooth speakers but not many have USB input connection or AC power. Any ideas?

 

[shadow_boxer]

Not really but ideally as cheap as possible, something sub £75 would be nice. We already have a Sony HTXT1 in the bedroom so sound quality isn't an issue. Would also consider something a little larger with a CD player but I guess then I might as well grab a mini hi-fi system.