Take DiGiCo's S21, give it a third touchscreen and more faders, and you have the S31. A robust ARM quad-core RISC processor puts an abundance of power under the hood. The touchscreens supply intuitive tactile control and instant visual feedback. 24 mic/line inputs and 12 analog outputs give you enough I/O to get started, while dual DMI option card slots provide room for expansion. The S31 delivers 24-bit/96kHz digital audio for world-class sound and comes with an arsenal of digital effects. A built-in 48-channel USB interface makes capturing any performance easy. Featuring an aerospace-graded aluminum extrusion and rugged polycarbonate overlay, the DiGiCo S31 is a full-featured digital mixer that's built for the road.