Hi All, I have a query regarding publishing 16 channels on a speaker device. I specify channel count as 16 while specifying the datarange in pin factory. In handler for KSPROPERTY_PIN_PROPOSEDATAFORMAT, I handle condition for 16 channels but the problem is that the handler for KSPROPERTY_PIN_PROPOSEDATAFORMAT is never called with 16 channels. It is called within the channel count range of 1-8. DataRangeIntersection is never called. Also I notice that for some devices "Advance" tab on Sound and Audio control panel shows "Channel, Bit Depth and Sample Rate" while for others, it just shows "Bit Depth and Sample rate". However for later case speaker configuration is enabled but for the earlier case "configure" button on Sound And audio control panel is disabled. What change in driver code leads to this behavior of Sound and Audio Control Panel? I tried removing KSPROPERTY_AUDIO_CHANNEL_CONFIG from my code but I still see "Configure" button enabled for my device. I am not sure what change in driver would let Sound and Audio CPL detect 16 channels for my device. Any help is appreciated. Cheers, Neetu