I think that should be possible. You have an option NodesToPatch in the VoodooHDA, which helps you to modify the nodes.

I have been looking for documentations about that, but it seems that Slice among other guys are only talking Russian about this, and I can't understand a thing ... I have been using Translation, but it is still hard to understand their talk.

Do a google search using the term "VoodooHDA NodesToPatch" and you'll see these Russian threads.

I do not remember the right key, but I think there was a key called Enable which allows you to enable or disable a node. You just need to find which node is actually related to the Mic.

For now, I'm kind of very busy to look into it. When I get free time again, I'll see if disabling the Mic will also solve my noisy output.

Nevertheless, I doubt that it is the microphone which is causing this problem. I'm thinking that it is not the right output node that is used by VoodooHDA.
When I run vooodoohdahelper program, I see that there are a lot of disabled nodes. Maybe, one of these might be better than the one used by VoodooHDA ...

The reason I think of this, is that it says "Speaker (CD)" for my output, instead of a purely simple "Speaker". There is obviously something wrong in the way that this is guessing the right output nodes. Unfortunately and again, Slice is not providing enough documentation to help in solving this issue ... and the source codes are commended in Russian too ... :-S

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