M-Audio Keystation 88 MK3

Features

88 full-size velocity-sensitive semi-weighted keys with natural piano feel
USB-MIDI connection for playing virtual instruments, controlling recording software, and more
5-Pin MIDI Output to trigger external MIDI devices
Transport and directional buttons let you operate your DAW from the keyboard
Pitch bend, modulation, and octave controls for expressive performances
USB-powered and supports plug-and-play connectivity to your Mac or PC
Lightweight design for easy setup and portability
iOS compatibility using the Apple iPad Camera Connection Kit (sold separately)
Includes Ableton Live Lite, a powerful music performance and creation software
Includes SONiVOX Eighty-Eight Ensemble, a virtual piano instrument that captures a 9-foot CD327 Steinway piano
Includes AIR Music Tech Xpand!2, a multitimbral all-in-one workstation

Requirements

Macintosh: Intel® Mac with Mac OS X 10.5 or later; 2 GB RAM
PC: PC with Windows XP, Windows Vista, Windows 7 or Windows 8; multicore processor; 2 GB RAM
Available USB Port