ONLY THING WRONG IS A FEW BROKEN KEYS WHICH CAN EASILY BE REPLACED. The CT6000 is a polyphonic instrument with 20 preset voices, a keyboard spanning five octaves, autochord and rhythm sections. The system permits up to eight notes to be played simultaneously, and this number is not reduced when the auto-accompaniment section is in use. Measuring 38" x 13½" x 5", it also incorporates two loudspeakers and built-in power amplifiers which provide ample volume for practice or home use, though as is customary, stereo line output jacks are fitted for recording and live work. The bottom 18 notes on the keyboard may be linked to the Casio's autochord section, and directly to the left of these is the pitch-bend wheel, which is centre-sprung. Touch controls (or 'membrane switches', as Casio call them) are located behind a thin plastic facia for voice, accompaniment and rhythm selection, and the individual sections are colour-coded in Yamaha tones. A variety of sound effects can be applied to any of the voices and these include two separate chorus effects. In addition to the usual mains input and stereo line outputs, the Casio allows you to connect sustain and volume pedals and a pair of stereo headphones. MIDI In and Out sockets are also present, enabling the 6000 to control (or be controlled by) any other MIDI-compatible device such as a synth, drum machine, or computer-based sequencer.