Akai Professional MPK Mini MKII | 25-Key Portable USB MIDI Keyboard With 16 Backlit Performance-Ready Pads, 8-Assignable Q-Link Knobs & A 4-Way Thumbstick USB MIDI controller with 25 velocity-sensitive synth-action keys with dedicated octave up and down buttons to increase the keyboard to the full melodic range Innovative 4-way thumbstick for dynamic pitch and modulation control, plus a built-in arpeggiator with adjustable resolution, range and modes USB powered, robust and ultra-compact design lets you create anywhere 8 backlit velocity-sensitive MPC-style pads with Note Repeat & Full Level for programming drums, triggering samples and controlling virtual instrument / DAW controls 8 fully-assignable Q-Link knobs for mixing, tweaking plug-ins and more Comprehensive production software package for Mac and PC worth over 150 included: Akai Pro MPC Essentials, SONiVOX Wobble, and Hybrid 3 by AIR Music Tech (downloads)