The ATUC-50INT interpretation unit is equipped with a 3-pin XLRF-type input for use with compatible gooseneck microphones, including the ATUC-M43H or ATUC-M58H microphones specifically designed for the system. The units also feature a display for monitoring volume and channel selection, buttons for selecting channel, a built-in speaker, a headphone jack with volume control, two independently programmable LED indicators, and a talk button to turn the connected microphone on/off (button on ATUC-50DU can also be programmed to function as a request-to-talk button). On units designated by the control unit as priority discussion units, the talk button can be used to mute and override a non-priority discussion unit.

The ATUC-50INT interpretation unit has the same body as the ATUC-50DU, but is programmed with firmware that makes it a powerful yet easy-to-use tool for interpreters in bi- or trilingual discussion applications. The units selection buttons allow interpreters to monitor either the floor language or an alternate language and to output their interpretation to one of up to three different language channels that can be monitored on the ATUC-50DU units. Two ATUC-50INT units may be linked to provide hardware redundancy for a particular language feed.