ReferenceE-66SpecificationsModels CTK-4200/WK-220/WK-225Keyboard CTK-4200: 61 standard size keysWK-220/WK-225: 76 standard size keysTouch Response 2 types, OffMaximum Polyphony 48 notes (24 for certain tones)TonesBuilt-in Tones 600Sampling Tones Up to 8 (Melody Sampling: 5, Drum Sampling: 3)*Up to 10 secondsFunctions Layer, Split, Piano/Organ buttonReverb 1 to 10, OffChorus 1 to 5, OffMetronomeBeats per Measure 0, 2 to 6Tempo Range 30 to 255Song BankBuilt-in Songs 152User Songs Up to 10*Step Up LessonLessons 4 (Listen, Watch, Remember, Auto)Lesson Part L, R, LRFunctions Repeat, Voice Fingering Guide, Note Guide, Performance EvaluationMusic Challenge 20 notesAuto AccompanimentBuilt-in Rhythms 180User Rhythms Up to 10 (Accompaniment Edit)*Chord Book Function Chord guideRegistration 32 (4 setups × 8 banks)Recorder Real-time recording, playbackKeyboard Play 5 songs, 6 tracksPlaying Along with aBuilt-in Songs 1 song (L, R, LR)Memory Capacity Approximately 12,000 notes (total for 6 songs)Other FunctionsTranspose ±1 octaves (–12 to +12 semitones)Octave Shift Upper/Lower ±2 octavesTuning A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz)Preset Scales 17Music Preset 305One Touch Preset 180Auto Harmonize 12 typesArpeggiator 90 typesMIDI 16 multi-timbre received, GM Level 1 standardMusical Information Function Tone, Rhythm, Song Bank numbers and names, staff notation, fingering, pedal operation,tempo, measure and beat number, chord name, etc.