The 2020-D-US System from Sennheiser for installed applications, the SR 2020-D-US rack-mount transmitter, and the L 2021-40 charging unit can be used with HDE 2020-D-US receivers for assistive listening, visual description, and language transmission in conferences, museums, theatres, and houses of worship. The digital system transmits on up to eight license-free frequencies. The 2020-D-US has a switchable XLR-3 input, and up to eight transmitters can be combined. The SR 2020-D-US can be ...

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