NIP's Headset Question [Astro]

I am thinking of buying the Astro A40 (or A30).
This is a headset that is mostly used by XBOX and PS3 players, but it is compatable with PC. The headset connects to a mixamp which then connects to a XBOX/PC. I think it is mostly used by XBOX players because of the Optical cable option, which really improves the suround sound quality. Most PC Sound cards don't have a Optical cable Line In/Out so this is why it is not an ideal PC gaming headset.

Well I've got the Creative Audigy 2 ZS, and on the front panel I got a Optical In and Optical Out slots. In my opinion if I use this port I will be able to get the top performance out of the headset and mixamp. Is this a good idea?
I know that the headset is also good by itself, but will I be able to use this Optical connection option in the way I think?

Thanks naps :)

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