I have had similar synths in the past, b ut I am quite happy with this Casio.įor this type of synthesizer, I strongly recommend going with an older used synth like this than modern, similar looking, unbranded, ultra inexpensive synths that are currently on the market. Sustain Pedal for Casio CTK-491 CTK-496 CTK-571 CTK-573 CTK-591 CTK-593 CTK-671 CTK-691 CTK-691 CTK-700 Keyboard Footswitch,ATB-005,ANTOBLE,0707948993714. It has a microphone input for those who want to sing along.Īnd it can be powered with an AC adaptor or batteries. Its fully polyphonic, touch sensitive and feels good under the fingers. There are many great sounds to explore, with tones to fit every genre of music. It can also be made into a multi-functional home studio synth with the addition of an effects processor. It's sound can be transferred through MIDI or via the headphone jack. The Casio CTK 491 is a great, affordable synthesizer for home and live performance. Tempos and keys can be changed with the touch of a button. It's fully polyphonic, touch sensitive and feels good under the fingers.įor beginners, there's a song bank with 100 songs to play along with, a simple drum machine with 100 rhythms and a few other tools to help with the learning process. It was very well packed and packaged (I especially liked the LARGE printed mailing. There are many great sounds to explore, with tones to fit every genre of music. The keyboard arrived well ahead of what I had expected. Jacks for mains cord, aux.The Casio CTK 491 is a great, affordable synthesizer for home and live performance.

This way any preset sound of the instrument is layered from the differently filtered sound outputs of both CPUs.ĬPUs 'NEC D771G, E04036' and 'NEC D772G, E02026' (both 64 pins with strange zigzag layout) According to Robin Whittle's bulletin 'Modifying the Casiotone Instruments' from 1981, both CPUs run independently in sync with each other and do the same, with the only difference that they contain each a different set of preset sounds in their internal ROM.

Power supply not included This 61-key portable board has 12-note polyphony, 100 tones, LCD screen, 100 songs, chord book, and Casio Chord auto-accompaniment. Timbres based on 2 mixed multipulse squarewave tones with different digital envelopes those are differently low pass filtered through capacitors. CASIO CTK-491 PORTABLE KEYBOARD 61 FULL-SIZE KEYS With MIDI In and Out CASIO CTK-491 MIDI 61 Keys KEYBOARD For Beginner Very Good Condition. 'tone' switch (selects between 2 envelope variations for each sound and thus doubles the sound palette) Useless 'tone memory' 4 step switch to assign 4 of the preset sounds for quick access The 'tone' switch offers 2 envelope variants for each sound.īuilt-in speaker (with sufficient bass but some upper midrange resonance)Ģ9 preset sounds selected by white keyboard keys + mode switch

This quite heavy wooden thing from 1980 was the world first music keyboard ever created by Casio It offered 29 digital preset sounds, selected through the white keyboard keys.

Casio ctk 491 review