The Lemon Aid is a boost pedal in essence but it also acts as a sort of preamp or frequency modifier. This pedal offers a clean, treble and full boost all in one. However, each boost position is adjustable in several aspects. You can make any one of the desired boost settings either thicker or thinner or you can cut the overall output to make the effect more subtle. The combinations of all of the available settings give you a myriad of boosts and frequency modifications."