Digital synthesizer Casio CT-S300

The Casio CT-S300 is a compact 61-key digital synthesizer designed for portable practice and performance. With dimensions of 930 mm x 256 mm x 73 mm and a weight of only 3.3 kg, it runs on batteries or DC power and offers up to around 19 hours of alkaline battery life. The instrument features piano-style keys with touch response, a pitch bend wheel, a full dot LCD, and built-in oval speakers with optimized equalization for balanced sound at various volume levels.

Advantages

The CT-S300 combines a slim, lightweight body and a convenient top grip for easy transport, while its strengthened oval speakers and EQ optimization provide surprisingly full sound for a compact keyboard. A simple, intuitive interface with a dial and home button reduces complexity. Additional features include Dance Music Mode with 12 Dance Music Voices, a My Setup button for saving user presets, USB-to-host (micro B) connectivity for use with smart devices or computers, and 5W RMS power output for clear playback.

Suitable for (tasks / use cases)

• Beginner and intermediate keyboard practice at home or on the move
• Portable performances and busking
• Music production and sketching ideas with a computer or smart device via USB
• Playing dance and electronic styles using Dance Music Mode and Voices
• Learning and practicing songs with the Chordana Play app and built-in demo songs

Key specifications

• Keys: 61 piano-style keys with Touch Response
• Power: Battery operation (alkaline) up to approximately 19 hours; DC adapter input supported
• Speakers: Oval speakers (13 cm x 6 cm) with strengthened magnets
• Output power: 5W RMS
• Connectivity: USB to host (micro B)
• Dimensions: 930 mm x 256 mm x 73 mm
• Weight: 3.3 kg
• Special features: Pitch bend wheel, Dance Music Mode, My Setup button, full dot LCD, Chordana Play app compatibility

How to use

Power the CT-S300 using batteries or the optional DC adapter. Use the home button and dial to navigate the full dot LCD menu and select tones, rhythms, or Dance Music Mode. Play with dynamic expression using the piano-style keys and Touch Response; apply the pitch bend wheel to add guitar- or sax-like bends. Save preferred tones and rhythms to the My Setup button for quick recall. To connect to a smart device or computer, use a commercially available USB A-to-micro B cable and open the Chordana Play app to display scores or MIDI files for guided practice.

Usage recommendations

For best portable performance, use quality alkaline batteries and enable the EQ optimization function when playing at low volumes. When connecting to a computer or smart device, use a reliable USB cable and check device settings to allow MIDI/audio communication.