Due to large amounts of sawdust being created in the garage, I'm no longer taking records in there. Currently I've got an older MacBook Pro and an older Denon AVR. The MBP will be loaded with a wide variety of digital files - some hi res vinyl rips, crap mp3's, lossless CD rips, etc. I run some loud tools at times and which drowns out the music, the rest of the time I'm listening, but not very critically. Currently I'm running a split RCA cable from the headphone port, should I be looking for a DAC? If a DAC, it's got to be on the cheap end. Maybe I'm overthinking the whole thing, but would a cheap DAC even outperform the built in DAC? Would I even hear the difference?