Casio Keyboard CTK-4000 Keyboard 61 keys (piano appearance keys) Touch Sense 2 intensity (can be turned off) Audio AHL Maximum Polyphony 48 Voices 570 kinds of built-in tones layer / split tone overlay, voice Split Digital Sound Reverb: 10 types Chorus: 5 kinds of rhythm / Mode 180 kinds of built-in rhythms (10 user rhythms) Auto Accompaniment modes: Casio Chords, Chords 1, FINGERED 2 (6th tone is turned off), FINGERED 3 (Bass open), the whole Keyboard Chord Controllers: Start / Stop, Intro, standard rhythm / fill rhythm, variation rhythm / fill rhythm, synchronous start / Ending Built-in Songs 152 (Song Bank) Song extended up to 10 (maximum of 320KB) teaching function Advanced Course exercises scoring system voice fingering guide (break up exercises: the right hand, left hand, hands together) Metronome 0,2,3,4,5,6 beat (speed range:? = 30 ~ 255) × 5 track recording six songs (performances recording), 1 (exercise recording), up to approximately 12,000 notes, real-time recording / playback sampling maximum sample capacity: 8 kinds of sound Maximum total sampling time: 10 seconds Sampling Audio Input: Audio input JACK plug other features Rhythm Editor ( 10 user rhythms) Preset Memory: 32 kinds of settings (4 groups × 8 individual memory banks) Scenario Music Library: 305 presets One Touch Preset: 180 Auto Harmonize group: 12 kinds Arpeggiator: 90 kinds of temperament ( Preset tuning system): Chromatic +16 kinds of 8 degrees lift: ± 2 octaves interval music Grading rhythm / music controller Transpose 25 files (-12 to +12 semitones) Tuning A4 = approx 440 Hz ± 100 Yinfen pedal interface standard jack (sustain, soft sound, drawing, start / stop) Display Screen LCD backlight MIDI GM Compatibility: a terminal interface: USB Speakers 12cm x 2 Amplifier Output 2.5W +2.5 W Input / Output Terminals Headphone / output (standard stereo JACK plug) Sustain / Assignable Pedal Audio input USB: B type external power supply (9V DC) USB terminal needs to use a USB cable (AB type) connected to the computer. Battery: 1 battery 6 Power adapter: AD-5 Dimensions: 950 × 376 × 130mm Accessories: music scores, music stand, power supply fit control, manual