I was searching around on eBay and found this auction for the Mixamp Pro. Does this look legit? Or is this some sort of knock-off version? One of the pictures shows the back of the unit, and the little door/flap is missing for the toslink input. Others have mentioned that this piece is prone to breakage, but the seller claims these units are new.
I have a 2011 Mixamp and the TOSLINK port has a small detachable rubber plug covering it rather than the standard flap door. I took off the plug on my Mixamp and the TOSLINK port matches the picture. That said, it probably doesn't come with the plug. I don't know how much of a good idea it is to leave a TOSLINK port exposed since they're usually covered. It may be due to light or dust sensitivity reasons... but I have no idea.