Dual P-CAP multi-touch screens, 48 flexi-channels, the equivalent of 46 buses and benchmark 96kHz performance. Based on the same pioneering design approach as the industry-leading SD series, the S21 boasts the same proprietary audio algorithms plus a new ARM QuadCore RISC processor which runs in harmony with the FPGA core. The result is faster processing with lower power consumption, all packaged in the workflow that the industry’s most respected engineers rely upon.