When choosing an instrument, there are some compromises you just can't make. Playing the CT-S500 featuring Casio's own AiX Sound Source, you'll get exactly the performance you imagine. It's a keyboard focused on sound, offering a range of rich tones created with expressivity in mind. Thanks to Casio’s Active DSP, effect parameters can be assigned to control knobs and tweaked in real time, adding greater dynamism and expression to your performance. Discover your own music with sounds that just want to be played.