im not yer man for the technicalities of the types and implementations of DACs im afraid, but can tell you that it sounds good in my setup (see my sig).
thing is tho, you have bought it now, and stanley will refund you if you want to send it back. spend a few days listening and comparing the ps3 with and without the beresford, and you will have your answer.
i suspect you have seen a similar thread here recently and panicked. if so then "calm down dear". if not, apologise for the presumption, but all i have said above still holds.