I'm not convinced that the DAC/analogue amplifier in my Mac Mini is all
it might be - the sound, while not unpleasant, appears to be rather
dull, at least compared to the DAC of an AV amplifier when fed the
optical output.

So, I'm thinking of a DAC to improve the sound. It does appear the sky's
the limit, but this caught my eye:

http://www.homehifi.co.uk/TC-7510/about.html

Any thoughts?

Thanks, Rob