Louroe Audio Monitoring HD-8 is an eight station headphone junction box with 1/4 inch inputs. It will accommodate up to eight headphones. Included is a volume control for each input, plus two expansion connectors for adding one or two more HD-8 units. The unit provides both a 1/4 inch plug and 1/8 inch (3.5 mm) plug for connecting into the headphone jack of the Louroe audio base station. All headphone connected to the HD-8 should be the same type and impedence to insure uniform output volume to all headphones.