“I gave the D3 a spin on some Apple lossless audio files and everything sounded excellent. Comparing the quality to the output of my built-in headphone jack was a challenge, because the D3 output is “hotter” than the regular Mac output. Adjusting for that, the audio through the D3 sounded cleaner. Quick transients like plucked strings and percussion had more of a bite to them. The sound of massed violins sounded less “electronic”. Bass was deeper, but also more clearly defined. I also listened to some high-definition files from Reference Recordings, which were running at 96 KHz. The sound was obviously improved through the D3. I’ll have to return my review sample, but certainly will buy one to use for my laptop and desktop Mac. It’s that good.” —— engadget.com