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The CM-CU1 offers a feature set designed for single commentator position and a line-level input. An individual commentator output and an additional output are provided, with a mix of commentator and line input audio. Its main panel features a limit indicator and a bright 21 segment LED PPM meter, which can be disabled, shows the main output level.
The line input can be configured to remain present at the mix output even if the commentator is off air. Four talkback output channels, with a built in limiter, are available to the commentator. A wide input gain range and switchable phantom power allows support of a variety of microphone types. There are 5 transformer balanced return audio inputs which, along with the commentator input, are routed to the headphone monitor controls. With these headphone controls, any monitor input can be adjusted and sent to either the left, right or both ears.
A featured GPIO port gives an open-collector driven output indication of any active On-Air or talkback channel and four remote inputs provide an external call/alert to each of the talkback controls. The CM-CU1 Commentator Unit can be powered from a universal mains input between 85-264V AC at 47-63Hz, or from a 12-24V DC input.