Inputs. These are where the audio sources are connected. These can be anything from a line-level signal, such as that from a keyboard or piano, to microphones. Usually, you'll have both a ¼” jack input for line signals, and an XLR connection for microphones.
What is the input and output of a mixer?
A mixer is really a traffic manager. A signal is connected to an input, and you steer it to one of several possible outputs. Some mixers have several stages of mixing, where inputs are mixed to submixes, or GROUPS, and then the groups are further mixed to a stereo output.
What are the different controls knobs in sound mixer?
Each channel on your mixer has a column of knobs that control the treble, mid, and bass levels for your channel. The treble knob controls the high frequencies, the bass knob adjusts the lowest frequencies, and the mid knob changes everything in between.