Sound Factory
Produce your own sound. The CTK-900 makes it possible to produce very special sound creations - with 600 tones, 160 rhythms and 242 digital effects. Thanks to the integrated song memory you will never lose a note. And very practical too: The General MIDI interface means you can transfer music data easily.
61 Touch-Sensitive Keys
61 touch-sensitive keys offer you the best possible opportunities and ideal space for your musical ideas.
600 Tones
600 tones are already stored on the CTK-900 and are available to you in excellent quality - you can add 124 of your own.
160 Rhythms
From waltz to salsa, 160 rhythms offer you a colourful cross-section of the world of music.
IDES
IDES included - lots of opportunities for expansion are available to you with the Internet Data Expansion System.
4 MB Flash ROM
The 4 MB Flash Rom offers the ideal preconditions for using the sound power of IDES fully.
ZPI Sound Source
For sounds in the best grand piano tradition: The integrated ZPI-sound source bases itself on your touch and picks up appropriate samples.
LC-Display
Gives you an overview: The back-lit LC-Display displays important information at a glance.
242 Digital Effects
Everything on board: 100 DSP effects, 100 user plus 16 reverb and 16 chorus effects respectively supplement the wide range of tones produced by your keyboard.
Europe 
61 touch-sensitive keys offer you the best possible opportunities and ideal space for your musical ideas.
600 tones are already stored on the 
From waltz to salsa, 160 rhythms offer you a colourful cross-section of the world of music.
IDES included - lots of opportunities for expansion are available to you with the Internet Data Expansion System.
The 4 MB Flash Rom offers the ideal preconditions for using the sound power of IDES fully.
For sounds in the best grand piano tradition: The integrated ZPI-sound source bases itself on your touch and picks up appropriate samples.
Gives you an overview: The back-lit LC-Display displays important information at a glance. 
Everything on board: 100 DSP effects, 100 user plus 16 reverb and 16 chorus effects respectively supplement the wide range of tones produced by your keyboard.