Ridge Street Poiema!!!Price: $550 for 1m cord

Website: www.ridgestreetaudio.com

Hans said: The Poiema USB cable performed its duties admirably. Tasked to do its best at de-digitalizing my system, the Poiema respectfully allowed my DAC to deliver all of the resolution and clarity I had come to expect from it, all the while helping it sound more musical and more natural -- indeed, better than it ever had sounded before.

Read the SoundStage! Hi-Fi review.

The gist: Upgraded USB cable: now a necessity for the best computer sound.