Thought some of you might be interested in this:

There's a sign-up form for interest in Pedja Rogic's Audial AYA II DAC.

If any of you remember Leo (our old DIY forum moderator), he used to use one, which saw off some MUCH more expensive kit.

I use the Model S, which is quite simply the best digital source I've heard; I'd expect the AYA to be 90% of the performance, and one of the best TDA1541A implementations available.