search the a-gon threads for di/o, or d/io, or dio. it will provide info about a cheap dac than can be modded, & the price w/mods is still less than $350. you can spend thousands, & still not do any better... well, i admit that there are a few folks who prefer their multi-kilobuck rigs to the art di/o, but many are selling their spendy stuff...
doug s.