The Allen & Heath CQ-20B is a compact 20-channel digital mixer featuring 96kHz FPGA processing, 16 mic/line inputs, built-in dual-band Wi-Fi, Bluetooth connectivity, and 24x24 USB/SD multitrack recording. Designed for remote control via the CQ MixPad app, it offers advanced features like Gain Assistant, Feedback Assistant, and four Smart-FX engines, making it ideal for live sound, studio recording, and installations.