| Casio's CTK651 features 61 full-size keys with a touch-sensitive keyboard that spans five octaves, letting you create or play music with full-size piano sound. Its useful onscreen keyboard with music staff and finger icons displays notes and chords played, while a built-in metronome with six drum pads keeps the beat. The CTK651 enables connectivity with MIDI instruments and musically equipped computers for recording, editing, and scripting. A mixer function allows for control over each MIDI channel and musical accompaniment. Its 24-note polyphonic keyboard offers more than 200 tones with 128 general MIDI, 32 presets, 32 user synth tones, and eight drum set tones. Other proprietary sounds and play modes feature room, stage, and concert hall presets and 100 discrete rhythm patterns. You can record your own compositions (5,200 notes) directly onto the keyboard using a two-song/six-track memory in real time or editable stereo time. A useful synthesizer function lets you create and store your own sounds. Its backlit LCD displays music selections, along with tone, rhythm, mixer, tempo, and keyboard function. Built-in two-way speakers deliver a 5-watt output and include bass reflex sound. The Casio CTK651 offers a 0.25-inch stereo line-out/headphone jack. It uses an AD-5 AC adapter or becomes portable with just six D batteries, neither included. | 
