The Pitchblack PRO Rackmount Tuner is the latest in a series of professional quality rackmount tuners that Korg has produced since 1987. Korg's latest rackmount model features a new 3D visual meter that's so beautiful you'll think of it as an aspect of your stage performance. The 3-dimensional expression of light inspires a feeling that for want of a better word, is just cool.The visual element of your performance is key, so why not make your tuner an asset ather than a distraction?. Although it's in a rackmount form factor, the body is ultra-lightweight and slim, allowing it to be used anywhere. This is a new generation of rackmount tuner that every guitarist/bassist with professional aspirations should experience.