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2. Support for Audio only optical and coax sources
This feature is for users who have digital audio only (coax and optical) source (i.e. no
video source) and want to use it with Duo. Previously this feature is not available
because the Duo goes into standby mode when there is no video input (auto standby-
on).
The Duo now detects the presence of digital audio (coax and optical) inputs in addition
to video inputs.
To use this feature
a) Select an unused video input
b) Assign the audio input that is connected to the audio only source using the on-
screen menu below.
Main Menu > Input Adjust > Audio Input
c) Selecting the unused video input effectively selects the audio input.
This feature is independent of the output and will work with all four of the Duo’s audio
outputs (HDMI A/V 1, HDMI A/V 2, HDMI Audio and Digital coax/digital).
3. HDCP is enabled on the output only if input is encrypted.
The previous Duo software enables HDCP (encryption) if it detects an HDCP based
display even if the input signal is unprotected. The current version enables HDCP only if
the input signal is HDCP encrypted.