Personal and assistive listening wireless base transmitter features 17 user selectable frequencies in the VHF band. The unit is equipped with comprehensive set of front-mounted control buttons, backlit LCD display, headphone jack with an adjustable level knob for input signal monitoring and peak reader on the LCD display for visual input monitoring. The rear panel of the ST-300 offers balanced XLR female connector with selectable mic, line and 70V input options along with an unbalanced 1/4-inch input. This cost-effective unit is recommended for use in school auditoriums and classrooms, houses of worship, meeting and screening rooms, lecture halls and other similar applications.