Used Monoprice EQ BOOSTER 611612 Pedal

Independently boost or attenuate high and low frequencies with this EQ Boost Pedal This pedal features a low frequency equalizer, which operates on frequencies below 250 Hz, and a high frequency equalizer, which operates on frequencies above 1kHz. Each equalizer allows for ±14dB of adjustment, making this pedal well suited for use as a clean boost or to match the volume output of different guitars. The pedal features true bypass, so it won't alter your tone when not actively in use.