Audioengine recently released a premium 24-bit DAC (digital to analog converter) which lets you bypass your Mac headphone jack and send the audio through a USB port. The result is an audible and sometimes dramatic improvement in music quality. The D3 is US$189.00, a very reasonable price as high quality DACs go.
The D3 DAC allows you to stream bit-perfect native 24/96 HD audio. Installation is simple. The hardware unit looks like a small thumb drive, and its aluminum housing is a perfect match for a Mac laptop. There are no drivers to install; you simply select your sound system preference pane and the DAC is recognized as an output device. Plug in some high quality headphones or powered speakers and you are
