CASIO CTK591   61 Key Musical Keyboard       61 touch sensitive keys 24-note polyphony (max.) 246 tones (118 tones + 128 GM-tones) Stereo Piano piano button (activates automatically piano mode and sound) 9 drumsets 110 rhythms + 10 piano pattern Intro, normal, variation, fill 1 + 2, ending One-touch presets 50 Sing Along-Songs, 50 Piano-Songs advanced 3-step lesson system Voice fingering guide Sing Along Function (Mic input, Mic volume, key control) Songmemory (2 songs, 2 tracks, realtime rec.) Metronome LC-Display (backlit blue) musical information system Key transpose General MIDI terminals: phones/output, assignable, midi-in/out Loudspeaker: 12cm x 2, 2 x 2,5 W (stereo) Power supply:: AD-5 G (9.0 V) or 6 batteries, size D (both optional) Size mm: 960 x 375 x 145 Weight: ca. 5,3 kg SING ALONG Input jack for normal microphones (Recommended is the new CASIO microphone PM 2656 S), volume control, the sing along button (illuminated) reduces the volume of the melody so that you can easily sing along. Start/stop for Sing Along Songs stored in memory. Direct access to the Transposition function (allows user to change the Tone by half-tone steps) Pulse dynamic Microphone PM 2656 S (optional) • Solid silver metalcorpus • Impedance: 600 ohm • Sensitivity: 71,4 +/- 2dB • Freq.response: 50Hz - 14500 Hz • With Cable XLR / 6,3 mono jack • Size (box) in mm: 235 x 138 x 68 • Weight incl. box and cable: 950g