The ultra-portable MPK Mini Play is based on the worlds most popular midi controllerAkai Professionals MPK Mini, but now it comes packed with 128 sounds and its own built-in speaker. With 8 backlit MPC drum pads and a 4-way joystick for simple control, players have all they need to play their music anytime, anywhere. Four knobs (two banks capable of controlling eight different parameters) can be used to tweak sounds and edit multiple parameters in real-time, giving musicians even more performance possibilities. Powered by 3 AA batteries, the MPK Mini Play is built for hours of wireless fun. Not just a mini keyboard, the MPK Mini Play can also connect to a computer via USB port for the same plug-and-play MIDI functionality as the classic MPK Mini controllers. If not disturbing others is a priority, players can use the mini-audio output jack to connect headphones to the MPK Mini Play. When you want a bigger sound, simply connect to external speakers using the same output jack. All-in-one, easy-to-use fun with pro featuresthats the MPK Mini Play! Features Standalone mini keyboard with built-in speaker and USB MIDI controller Built-in sound module with over 128 instrument sounds + 10 drum kits 25 synth-action mini keys OLED display for easy sound browsing 8 red backlit drum pads (2 banks, 16 total) 4 knobs edit sounds or send midi (2 banks, 8 total) 4-way joystick for pitch and modulation control Built-in arpeggiator 1/8 headphone jack Battery powered using (3) AA batteries