clarke-tech 2100+ 1.11p no dolby digital?

intruder

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hi
first: im new here, it is a very nice board and here i get fast the new keys
very cool ;)


ok now my problem

i have the 2100+ connected to my yamaha rx-v640rds recevier with a optical "cabel"

but there is always only PCM
when i press the green button for the audio channels there is only left right and stereo aviable...

why this?
thanks in advance
 
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