Dear all, I am an audiophile rookie with very limited practical experience. I was wondering whether it would make sense to buy an external DAC considering the following: - I use Spotify Premium with qualities set at 'extreme' - I have ordered the new 15" MBP - I have an M-Audio Studiophile AV-40 speaker set Would it make sense to buy an external DAC? Or doesn't that add anything to the MBP DAC in this setup? Or in other words: what at this point is really the limiting factor? (Sound quality, DAC or speaker set) Thanks!