The Casio has 120 sounds, with 70 rhythms to accompany, while the Startone has 390 sounds and 110 rhythms/styles to accompany.

notes of polyphony (number of notes that can be played at the same time). This includes the accompaniments that also consume notes. So if you play on top of an accompaniment more notes will be accumulated) Other relevant differences are that the CTK 1500 does not include a metronome, while the CTK 2500 does. Finally, the CTK 1500 does not have a sustain pedal input, whereas the CTK 2500 does. We will put the characteristics of each of these pianos in 2 different columns to make it easier to see the differences: In the 1500 we find 50 preset songs, and in the 2500 we have 60. Also speaking of rhythm presets, the 1500 offers 70, while the 2500 gives us 100.

MA-100 - mini keyboards- Electronic Musical Instruments - CASIO". arch.casio-intl.com . Retrieved 2019-12-07.

With barcode reader. It possible play notes while a memory recording is playing at same times. Not includes ADSR but conserve a button to configure sustain. Rodell, Miriam (May 1985). "The Great Pretender? (ES May 1985)". Electronic Soundmaker & Computer Music (May 1985): 15–15. Both include pre-recorded songs in demo form, the CTK 1500 has 50, while the CTK 3500 gives 60. Speaking of preset rhythms, the CTK 1500 offers 70, and the CTK 3500 includes 100.It's a micro calculator. It has capacity to record, play demo music, vibrato switch, and tempo function. Demo -melody is same VL-1 and it hasn't rhythms. Both have a learning system, the Casio with different hands (right and left) and the Yamaha, a Duo system, in which it allows two people to play the keyboard at the same time. Home > Computers & Software > Keyboards > Casio Keyboards > Casio CTK-1550 Digital Keyboard Manual Casio CTK-1550 Digital Keyboard Programmable synthesizer with additional RAM card slot. Has pitch bender and modulation wheels. Doesn't send or receive SysEx. Vibrato, delayed vibrato, heavy vibrato, sustain. Interesting arpeggiator. 10 presets, 10 user programmable patches.