In have read with interest a number of threads regarding external DACs and yet I appear to be unable to find any reference to them in the mag in the ratings section at the back. Are they there and I just can't find them? If not, would it be worth reviewing a few and extending the ratings section to include external DACs, especially given the increasing tendency for using the PC as an audio source? I, for one, would be interested in a review of the highly regarded Beresford DAC for starters.