The expansion boards for the Reference Monitor RM-4C8 allow the monitoring of a digital audio stream containing either Linear PCM or Dolby* encoded audio. The RM-E1B has 2 x BNC connectors for S/PDIF level inputs.
Dolby data is decoded and passed to the Reference Monitor as either a stereo down mix or the full complement of individual channels. If the signal is standard Linear PCM, then this audio data is simply passed straight through. The input is re-transmitted with minimal delay, to allow connection to other equipment.
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