IK Multimedia (www.ikmultimedia.com) says its iRig Keys I/O 25 keyboard controller/audio interface is available in Apple retail stores. 

In addition to offering laptop and desktop compatibility, the iRig Keys I/O 25 is suitable for use with iPhones and iPads thanks to the included Lighting cable connections and certified MFi compatibility. It now also features full support for Apple’s MainStage 3 performance app.

Until Sept. 30, anyone who purchases iRig Keys I/O 25 will receive a complimentary iRig Keys I/O Travel Bag featuring adjustable straps, a zippered pouch for cables and other small items. It costs $199.