Yes. The DVR+(CM-7500) supports Dolby Digital multichannel audio output (also known as AC-3). It allows you to enjoy great 5.1 channel digital sound when your use the SPDIF optical port to connected to a suitable Dolby Digital amplifier. Please note that if a channel is not broadcasting a Dolby signal, it is not possible to receive Dolby Digital. When Dolby Digital audio is broadcasted, the logos will be visible on your channel info bar.
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