DAC with volume control under $250


I have a friend asking for a DAC, equipped with volume control, he could connect to his Airport Express via optical (mini toslink).
The budget is pretty tight, only $250.
Is there anything out there to fit this tight bill?
Thank you very much.
mihaitaa
My friend has ordered the Emotiva which definitely did fit the budget. Even shipping was included in the $249. It's on its way to him now.
Thanks again.
That's great. I considered getting one myself to use the balanced outs into some amps I have, but will probably just get an all in one integrated instead to save space. Please be so kind as to update us with some listening impressions when you have a chance. I hope your friend enjoys it. Seemed to get a lot of positive feedback on various forums, especially for the price.
I'll do my best. Probably I won't get to hear it, but I'll post his impressions.
We both "owe" this to those who helped us in the search. ;-)