ReferenceE-40SpecificationsModel LK-230Keyboard 61 standard-size keysTouch Response 2 types, OffKey Light System Up to 4 keys can be lit at the same timeMaximum Polyphony 48 notes (24 for certain tones)TonesBuilt-in Tones 400Sampling Tones 1 (Full Sampling) or 3 (Short Sampling)Sampling Time: 1 second (Full Sampling) or approximately 0.3 seconds each (Short Sampling)Effects: 10 types (for Full Sampling samples)Reverb 1 to 10, OffVoice Pad 5 pads × 4 sets(3 sets for sampled sounds, 1 set for percussion only)MetronomeBeats per Measure 0, 2 to 6Tempo Range 30 to 255Song BankTunes 110Step Up LessonLessons 4 (Listen, Watch, Remember, Auto)Lesson Part L, R, LRFunctions Repeat, Voice Fingering Guide, Note Guide, Performance EvaluationMusic Challenge 20 notesAuto AccompanimentRhythm Patterns 150One Touch Presets 150Other FunctionsTranspose ±1 octaves (–12 to +12 semitones)Tuning A4 = approx. 440 Hz ±100 centsMIDI 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.Inputs/OutputsUSB port TYPE BSustain jack Standard jack (sustain, sostenuto, soft, rhythm start/stop)Phones/Output jack Stereo standard jackOutput Impedance: 200Ω, Output Voltage: 4.8V (RMS) MAXAudio In jack Stereo mini jackInput Impedance: 40kΩ, Input Sensitivity: 200mVMic In jack Standard jackInput Impedance: 3kΩ, Input Sensitivity: 10mVPower Jack 9V DCPower Supply 2-wayBatteries 6 AA-size zinc-carbon batteries or alkaline batteriesBattery Life Approximately 3 hours continuous operation on alkaline batteriesAC Adaptor AD-5Auto Power Off Approximately 6 minutes after last key operation (Operates during battery use only)Speakers 10cm × 2 (Output: 2W + 2W)Power Consumption 9V = 7.7W