The Cambridge Qt X 600/600D control module is a sound masking generator, controller, third-octave band equalizer and amplifier, with two auxiliary audio inputs to allow for distribution of audio from paging controllers and/or (background) music players. The Qt X 600/600D controls up to six zones of Qt standard or active emitters. The Qt X 600/600D control module is a compact six-zone networkable controller suitable for installations of up to 72,000 square feet (6,690 m2). Each zone can be independently adjusted for masking and aux audio levels and spectra. Both models feature full compatibility with Biamp's SageVue™ system management software. When multiple controllers are included in a single system audio inputs can be shared across all controllers via AVB or Dante (600/D).