Samson S-Zone.

Samson S-Zone gives system installers all the features they need to control up to four zones of audio with a compact, single-rack space unit. 

It features 2 balanced mic and 4 balanced aux/line inputs with a unique front panel control section that allows you to assign any of the four inputs to any of the four zones with just the push of a button. 

The front panel layout also has input and output volume controls, independent 2-band equalization, and an on board speaker for selectable zone monitoring.