ATV via Component: I do not know for sure as I have mine on a BV8-32 and this has no DSS Module.
But I think the output of ATV is analogue Cinch and therefore it is just Stereo.
BeoVision 8-40 / BeoVision 8-32 / Beovision 6-26 / BeoSound 3200 / BeoSound 1 / BeoLab 3 / Beolab 6000 / Beolab 2000 / Beoport / Beomedia 1 / 3* Beo4 /BeoCom 5 with VOIP