When choosing Yamaha mixers, count the microphones and other sources you plan to connect at the same time, then select a channel layout with room for future additions, such as a six- or twelve-channel console. Check the input types as well: balanced mic/line inputs suit microphones and professional audio equipment, while RCA and mini-stereo inputs accommodate media players and other consumer audio sources.

A mixing console combines and adjusts audio from microphones, line-level sources, and other inputs, then sends the mixed signal to separate amplifiers or powered speakers. A mixer-amplifier combines those mixing functions with built-in power amplification, and some models add features such as zone control, source equalization, feedback suppression, and priority ducking for commercial audio systems.

Choose a single-zone mixer when one area needs the same audio source and volume control throughout, such as a small retail space, classroom, or reception area. Choose a two-zone mixer when separate areas need independent audio sources or volume levels, such as a dining area and patio, or a lobby and hallway.

Review whether the unit is a standalone mixer or a mixer-amplifier, then confirm the available power, the speaker impedance or distributed-audio requirements, and whether the system uses direct-drive or 70- or 100-volt output. Check that the mixer has the needed microphone, line, RCA, or mini-stereo inputs, along with balanced or unbalanced outputs, zone controls, and any required phantom power or remote-control connections.