LENCO CS-460 Manuel D'instructions page 22

with 2 channels, it will output the common 2 channels of stereo signal.
VSS: If you choose the item, when playing a disc recorded with 5.1 channels,
the main channel speakers can output audio signal with VSS effect.
4.24.6 DIGITAL SETUP
OP MODE
It is for selecting audio output mode.
DYNAMIC RANGE
After selecting the compression mode of LINE OUT, set the item, so you can adjust the linear
compression ratio. If you set it to be FULL, the Peak-to-Peak value of the audio signal is the
minimum; if you set it to be OFF, the Peak-to-Peak value is the maximum.
DUAL MONO
It is for selecting a desired audio output mode for the left and right ways of signal.
It is mainly for Karaoke of Ac3. There are 4 modes in all as follows:
STEREO, MONO L, MONO R, MIX MONO.
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