I have gone from using computers (Mac & MainStage) for live performance, to a hardware setup. Less fear and hassle and downtime and confusion if something isn't working at a gig. But, how to use all my MIDI gear that sends data via USB, without a computer??!
I tried different solutions that are on the market, but have settled on iconnectivity products. I am using their original iConnectMIDI box, but now they make different versions. EVERYTHING I have tried to hookup to this thing just works. SoftStep, homemade controllers, Akai, Korg, MIDI in, MIDI out, even an iPod Touch or an iPad. Its got USB in, MIDI DIN ins and outs, and 30-pin iPad/Iphone connect.
They continuously update their products and what I really like .... it just works!!