Used Casio CT-S1BK 61-Key Keyboard 61-Key

Simple, stylish, and surprisingly powerful, the Casio CT-S1BK delivers focused performance in a sleek black 61-key design. Part of the Casiotone lineup, this model keeps the layout clean and intuitive while offering a rich selection of expressive sounds. Its ultra-slim profile and lightweight build make it easy to move from room to room, rehearsal to gig, without feeling like you’re hauling a full production rig.

At the heart of the CT-S1BK is Casio’s AiX sound engine, known for its detailed acoustic piano tones and dynamic response. Alongside the core piano sounds, you’ll find a curated collection of electric pianos, organs, strings, and synth textures that feel musical and inspiring rather than overwhelming. Built-in speakers deliver clear, balanced sound for practice or casual performance, and USB connectivity makes it easy to integrate with recording software or virtual instruments. A power supply is included so you can plug in and start playing right away.

Every instrument that comes through our shop is thoroughly tested to ensure it’s performing properly before it hits the floor. We buy, sell, and trade used gear every single day, so fresh inventory is always rotating through the store. Be sure to take a close look at all the photos in this listing for the most accurate view of