"QX24 is one half equalizer, other half exciter. It is authentic design and there are just few other plugins that offer comparable functions without getting too complicated. Using it properly you'll be able to accent parts of spectrum where instrument's character resides making it more prominent, while gently reducing remaining frequencies that often clutter the mix. Sound gets harmonically enhanced mostly with first two harmonics, but if you push it past moderate drive levels it gets much brighter - experiment and find the best way to utilize it."
Find more effects!