xEQ is a straight forward parametric EQ/Tone Control. It consists of Low and High shelf filters and three Peak/Cut filters. It is very useful for placing around distortion effects. Place before as a tone control and after to simulate a speaker cabinet's frequency response curve. There are some example presets in the distribution that are useful starting points for tailoring your tone. The presets starting with TC are tone control curves and those marked with an SC are for speaker cabinet response curves.