It is not great, but okay for background music with a good toslink glass cable. With a reclocker it can be as good as a good transport.
This may seem like a stupid question so please forgive my ignorance. I just hooked up an airport express and think it sounds pretty good given what it is but obviously would like to improve it a bit.
So my questions is are you coming out of the airport into the DAC and then into your pre-amp. I am currently comming out of the airport with a monster cable directly into my pre (aux2 input).