Among M-Audio MIDI keyboards there are very little devices, for example, Keystation Mini 32 – keyboard with 32 velocity sensitive keys, powering from USB and good set of controls. Among them : volume control knob, buttons Sustain, edit, octaves control ( they can be programmed for other uses ) and modulation and pitch control. On its side there is Mini USB port for connection to computer and powering. Device works in Windows XP, Vista, 7, 8, 8.1 and 10 and Mac OS X without additional drivers and allows to record MIDI notes in DAW ( Avid Pro Tools, Ableton Live, Steinberg Cubase, FL Studio, Cackewalk Sonar, REAPER and others ) and control VST instruments and effects. Its sizes are 418 ( width ) x 105 ( depth ) x 19.8 ( height ) mm and mass is 0.45 kg. 
M-Audio Keystation Mini 32 can be connected to iOS devices via additional Apple iPad Camera Connection Kit. With it AIR Music Technology Ignite, 275 instruments’ sounds and DAW Ableton Live Lite are supplied. Package contains : M-Audio Keystation Mini 32 keyboard itself, USB cable, disks with programs, warranty card and user’s guide. MIDI keyboard is good : has 32 keys, compact sizes with powering only from USB connection and good set of controls; there is ability to wish for modulation and pitch bend wheels, instead of buttons, drumpads and larger set of controls, however this will dissonate with its compactness. Also it worth noting, that for the same amount of money there is ability to buy larger and more functional MIDI keyboards, including ones with powering from adapter for work with tablet PCs; so, here is the choice between compactness and functionality.
