You will need a DAC for decent sound quality. Start with something less expensive like a Concero or metrum octave. Drive it with a good USB cable like an audioquest diamond or coffee. USB cable should be 1.5-9 feet long, no shorter or longer.
Start with a good playback software on the Mac, like Audirvana or Fidelio. Some are free. Rip your CDs to wav or ALAC format using free software tool XLD:
http://tmkk.pv.land.to/xld/index_e.html
Other tips:
http://www.empiricalaudio.com/computer-audio/
http://www.empiricalaudio.com/computer-audio/recommended-systems
Steve N.
Empirical Audio
Start with a good playback software on the Mac, like Audirvana or Fidelio. Some are free. Rip your CDs to wav or ALAC format using free software tool XLD:
http://tmkk.pv.land.to/xld/index_e.html
Other tips:
http://www.empiricalaudio.com/computer-audio/
http://www.empiricalaudio.com/computer-audio/recommended-systems
Steve N.
Empirical Audio