The Korg plugKEY MIDI Audio Interface has been designed specifically for iOS musical instrument apps and software. Simply plug your keyboard or MIDI controller into the plugKEY via a MIDI cable then connect the interface to your iOS device with the built-in lightning connector and begin enjoying a wide variety of creative possibilities. Ideal for live and studio performances alike the Korg plugKEY Interface also features studio-quality 1/4 audio outputs volume control and a 1/8 stereo mini jack output for headphones.