Live Sound Reproduction refers to the amplification of live audio, such as speech or music, through the use of a Sound Reinforcement system.

This is a typical setup for live sound reproduction in an auditorium, along with the most common interfaces/cables:

On top of this, monitor feeds may be sent from the mixing desk back down the multicore (using the returns) to the stage, so that the performers can hear themselves talk/sing/play. Wireless in-ear monitors are becoming increasingly common for this purpose. A drummer will often have a special set of speakers, to output the Drum Mix. Larger setups can often include a dedicated Monitor Engineer to control instrument levels for each performer.

The Sound Operator operating the mixing desk will usually have a set of monitors and/or headphones to listen to channels without them being output over the main system. This is referred to as Pre-Fade Listen.