The ATS-500ST is a single channel stationary transmitter for use with ATS-500R digital pocket receivers. It is ideal for theatres, churches, and conference venues for broadcasting language interpretation, audio description or assisted listening. • L&R inputs with selectable aux or line input level • XLR3/6.35mm jack combi input sockets, electronically balanced • Loop through outputs on balanced 6.35mm jacks • AF balance and out put level controls • Headphone 3.5mm socket to monitor transmit audio • License-free 863-865MHz • 3 years warranty