This is a nice lightweight controller. 49 keys with 12 selectable velocity curves. USB, battery or adapter powered. A USB midi interface is built in, no need for a midi interface! 
 

This little controller packs a lot into a little space. 32 velocity sensitive keys with aftertouch. 50 fully customizable controllers. 18 velocity pads for triggering drums or samples. USB powered and midi merge allow this unit to be your midi interface.
OUR PRICE $249