6-zone mono PA volume controller for 100 V line audio systems, providing six transformer-isolated zone outputs rated at 10 W RMS each. The unit offers 10-step attenuation, six built-in 24 V emergency priority relays, screw plug connections and a manual front-panel control interface. It accepts and distributes mono audio and is housed in a 19-inch, 2 U rack-mount enclosure measuring 48.3 × 23 × 8.9 cm and weighing 3 kg.