The JHS Haunting Mids is great for manipulating the midrange of any overdrive, fuzz, or boost pedal, being able to sweep mids and then boost/scoop them, letting you cut through the mix.The Volume control lets you adjust the output volume, and also lets you get up to +10dB of clean boost when the Mids knob is set at noon, Mids controls how much the mids are boosted or scooped, Sweep controls which mid frequencies are boosted or scooped by the Mids knob - below noon is low-mids, and above noon is high-mids. Theres also a hi/lo toggle switch, which sets the width and sharpness of the frequency curve.Himode is more pointed and defined, andloprovides a wider and softer mids for a slightly more subtle, balanced effect.Its great for metal players who want some extra sharpness in their sound, as well as blues players who want to reduce the mids to get the highs and lows stand out while playing lead, among many other examples, making this an incredibly versatile, yet subtle pedal that