The vowel-like open wah-wah feel of the PAF Pro and FRED is combined with tremendous midrange and bass for a sound that really kicks hard. Because the lows, mids, and highs are all boosted, using a Tone Zone feels like cranking up an extra set of tone controls. It adds further dimension to the sound of your amp - that elusive edge that can make a good-sounding rig into a great-sounding one. Notes seem to get bigger after they're picked, and burn hard as they sustain. It's the right stuff to wake up your amp. Ballsy, aggressive tone has plenty of drive in all the right frequencies, abundant gain to push preamps and power amps, and sensitivity to pick attack that gets the most out of any style from metal to blues. Hot enough to qualify as a high-output pickup but with a wider dynamic range. Hard picking will produce a lot of power and softer picking will be much cleaner and quieter.