The allen heath cq20b is a digital stagebox mixer that delivers exceptional sound quality and versatility. With its 96khz processing engine this mixer provides great sound fidelity for both input signals and its built in effects. The cq20b offers a wide range of connectivity options including bluetooth wireless and sd and usb audio recording and playback. Designed for speed and ease of use the cq20b features quick channels gain feedback assistants and signal conscious fx enhancing the overall audio experience with automatically responsive processing. Whether you are a band producer av professional or rental company this mixer is perfect for any application that requires high quality sound processing and summing. This mixer features rotary controls allowing for easy navigation and control of the various features and settings. Additionally the cq20b has two different control apps with the cq mixpad for full portable mix control for engineers. Meanwhile cq4you provides complete monitoring mix control for each individual performer on stage at once with both apps having compatibility with windows mac android and ios devices.