Never used it! In brand new condition. This is the Samson Graphite 25 midi keyboard. 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. The Graphite M25 also 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. In addition, the controller's Sustain button enables the controller to extend notes without the need for an external pedal accessory. With all these comprehensive features, the Graphite M25 puts a wide range of musical expression and tone manipulation at your fingertips. The Graphite M25 also features four large velocity-sensitive trigger pads that can be easily programmed and assigned. Use them to tap out drum beats, cue one-shot samples or start and stop sequences. The trigger pads also have aftertouch, which allows for customizable control over a variety of effects and parameters, for example the addition of a filter or other effects to a triggered sound. Expand your options further with a second bank of triggers, bringing the total to eight. With such versatility, the trigger pads are a vital performance and recording feature of the Graphite M25.