Battery-powered USB hub?

[MacMechanic]

Does anyone know of a solution that will result in a TRULY portable iPad audio system?

Many USB mics and powered USB audio interfaces will only work with the iPad if connected to a powered hub. I can't find any battery-powered hubs, or battery packs that will power a USB hub.

Has anyone else had any luck with this? Am I the only one who needs an externally-powered hub that doesn't get its power from an outlet?

 

[chotty]

Good question!

Does anyone know of a solution that will result in a TRULY portable iPad audio system?

Many USB mics and powered USB audio interfaces will only work with the iPad if connected to a powered hub. I can't find any battery-powered hubs, or battery packs that will power a USB hub.

Has anyone else had any luck with this? Am I the only one who needs an externally-powered hub that doesn't get its power from an outlet?

I'm looking for the same solution for iPad2. *The Alesis IO is pretty sweet for $199 though it's AC powered...