An audio mixer, also known as a mixing console, is a device used to combine and adjust the levels of multiple audio signals, such as from microphones, instruments, and playback devices, into a single stereo or mono output signal. It allows users to control the volume, tone, and effects of each individual audio source and blend them together to create a polished sound. Audio mixers are commonly used in live sound reinforcement systems, recording studios, and broadcasting. They come in various sizes and types, ranging from small portable mixers used for home recording and small performances to large-scale mixing consoles used in concert venues and recording studios. Audio mixers can also include additional features such as EQ (equalization), dynamics processing (compression, limiting, gating), and digital effects processing (reverb, delay, chorus).