as well as the amp with the four opamps per channel i posted about a few weeks ago, i also made one with a single lme49600. can't recommend it highly enough, it sounds fantastic and needs only a handful of components. soldering the smt parts is certainly do-able. too bad the lme49600 are expensive. buf634 is the older but exact same part, it was available in soic, but also dil. you can still get them on ebay for a third of what the lme parts cost.