Outstanding Portable Keyboard from Casio The Casio CT-X5000 Portable Keyboard is an outstanding keyboard for nearly any skill level. It features pioneering AiX Sound Source technology, has an expandable library of 800 instrument tones, 260 accompaniment styles, and a bass reflex 12-watt speaker system, which adds up to giving you nearly endless avenues of tonal and stylistic exploration. The 61 touch-sensitive keys respond beautifully, letting you chord effortlessly as well as work on melodic runs a feature that keyboardists here at really appreciate. Stellar features for sound The CT-X5000 is a portable, sound-exploration dream. It has a 17-track MIDI data recorder and a 42-part mixer that let you craft elaborate sequences and songs. You can also record up to 100 different phrases and replay them using the phrase pads, adding all kinds of interesting aspects to your performances. Create new and interesting tones directly on the keyboard, or interact through USB with your computer and control external sounds and virtual instruments. The CT-X5000 has 100 DSP effects, including amp modeling and a rotary speaker simulation that let you tap into all kinds of classic tone. There are also assignable expression pedal inputs on the CT-5000, allowing for external creative control of various parameters it's all up to you with the CT-X5000.