I'm having to replace the old Kenwood receiver in my garage which has just died. I'm looking for a 2 channel only integrated amp or receiver which will power 4 speakers. I'm looking for recommendations for this replacement, and here are my criteria: 1) Solid power handling (driving Polk R15's) 2) Reasonably accurate 3) Moderately priced 4) Digital in if possible I'm willing to considered used/refurbished equipment if reliable. I'm planning to source this with .WMA and MP3 files from a laptop computer. Can anyone help?