Sennheiser SR 2050 IEM 2-Channel Stereo IEM Transmitter | Frequency: AW+ (470-558 MHz)Robust, reliable and flexible in short: professional. With the SR 2050 rack mount twin transmitter, 26 channel banks with up to 32 channels are available. In six of the channel banks the channels are freely programmable. The SR 2050 rack mount twin transmitter is an in ear monitoring system designed to meet the highest demands for audio quality and RF transmission and is therefore the first choice for professional touring, broadcast, musical and