Not enough MIC channels on your mixer?
Then you need this!
4 channel microphone mixer - including the PSU!
Simple to use mono mixer with standard 6.3mm (1/4") jack inputs and same for output. Plug your microphones in and take the master output into one MIC channel on your existing mixer or PA system. Each MIC channel has it's own volume control plus there's a master output control for the overall mix.
Usually you don't get the power supply - that's about as useful as a knitted condom so we include the power supply for you!
Pros : Easy way to expand the number of MIC channels on your mixer.
Cons : It's another piece of kit to take but hey it's not exactly big and heavy and it's cheaper than changing your main mixer.