The question isn't "Do I need a DAC?", of course you don't NEED a DAC or most other stuff for that matter. The question is "Do I want a DAC?". Only you can answer that question.
Donplatt, We're all assuming the Sony has a digital out? You'll need a decent digital cable to connect with the new DAC. How about going from your computer to the DAC? That's another possibility.
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