What makes it super?
When the HD.6X-Pro launched back in the summer of 2007, it was the only guitar in the world capable of outputting the sound of each string individually straight out of the box. The onboard hexaphonic pickup carries the digital signal via ethernet port to a breakout box then your computer.
Being able to adjust the volume, EQ and the position in the stereo image of each string individually - not to mention the ability to apply completely separate effects processing and amplification to each string - drastically expands the horizon for tech-savvy guitarists. As with some other notable innovations in Gibson’s back catalogue, the HD.6X-Pro was arguably too far ahead of its time.
FULL REVIEW:Gibson HD.6X-Pro Digital Guitar