The newly developed Smart Scaled Hammer Action Keyboard is what makes the slim 232-mm depth possible. Going beyond the accepted standards for hammer-action keyboards, the new design reproduces the individual response characteristics of each of the 88 keys on a grand piano. In addition to the size advantage, the PX-S1000 and PX-S3000 weigh in at roughly 25 pounds allowing performers to transport them to and from gigs with ease.

Casio's new proprietary Sound Source delivers authentic grand piano sound, including multiple types of resonance and mechanical sounds. A free app allows complete control via an Android or iOS device, and also offers PDF score viewing. Other features include 192-note polyphony, integrated Bluetooth audio, optional battery power using 6 AA batteries, MIDI recorder, and more.