Count the microphones and line-level sources you plan to use at the same time, then allow at least one spare input for future additions. Small audio mixers in this category range from two switchable line inputs with a microphone input to models with seven microphone and line-level inputs, with Bluetooth available on some configurations.

Yes, small audio mixers can combine microphone signals with music and other line-level audio sources, then send the blended signal to an amplifier or connected audio system. Many models also provide adjustable microphone levels, source selection, and outputs for expanding audio to additional zones or equipment.

Check whether the small audio mixer supports your speaker system’s format, such as 70V distributed audio or low-impedance speakers, and match the amplifier’s output power to the speakers’ power handling and the room’s coverage needs. Also review the number of channels, microphone and line-level inputs, output connections, and features such as microphone priority, phantom power, or Bluetooth when the installation calls for them.

Small audio mixers with loop or balanced line outputs can share audio sources with additional mixers or amplifiers, supporting system expansion across multiple audio zones. Models with record outputs, preamp loop connections, or amp inputs can also integrate with external equalizers, digital signal processors, or other audio equipment.