Samson's Graphite M25 USB MIDI Controller gives you all the music production control you need for home studio and mobile applications. Packed into an ultra-portable design, the Graphite M25 features a 25-key velocity-sensitive mini keyboard, trigger pads with aftertouch, a full-featured control surface and additional programmable functions for advanced playability and customization. And with iPad/USB bus power and plug-and-play operation, the Graphite M25 makes it easy to express your most dynamic musical ideas, no matter where creativity strikes. Keyboard Dynamics The Graphite M25's semi-weighted keyboard provides musicians with a responsive and expressive platform that is designed to feel more like an instrument than a controller. It comes equipped with velocity-sensitive keys that accurately capture the dynamics of a performance. With 25 keys, the Graphite M25's pitch range is perfect for performing, while remaining highly portable. Expanded Mobility The Graphite M25 features Pitch Bend and Modulation touch-sensitive ribbon strips that offer precise control over the effects and add portability value to the unit. Its dedicated Octave button allows you to expand the keyboard to a full 4-octave range, without using any sub menus or shift keys. Specifications: 25-key velocity-sensitive mini keyboard Ultra-portable design, perfect for home studios and on-the-go applications Programmable master encoder, eight MIDI assignable knobs and transport controls for hands-on control over your DAW and virtual instruments Four velocity-sensitive trigger pads (two banks each) with aftertouch for drum sounds and samples Control Change mode sets trigger pads to send control change messages Program mode sends program change information Four customizable Preset options Dedicated Octave and Sustain buttons, Pitch Bend and Modulation strips Mini USB port iPad and USB bus powered