The Qt100 sound masking processor from Cambridge Sound Management supplies power and signal to up to 120 Qt Emitters over a 12,000 square foot space. It has one audio input for paging. The Qt100 is ideally suited for small to medium sized businesses with open office spaces. It has only one zone, but paired with the Qt Room Control, a second virtual zone can be attenuated on demand, or for a space with a lower ceiling height than the rest of the office, adding cost-effectiveness to this entry-level system.