TheMooer MEP-PBO Pure Boostmicroguitar effects pedalpacks an incredibly BIG sound into a very small package.The Pure Boost pedal produces +20dB of clean boost with +/- 15dB 2 band EQ for nice embellishing of the original tone.Features:Volume: Adjusts output volumeBass: Adjusts level of bassTreble: Adjusts level of trebleGain: Adjusts the gainThe pedal switching is True Bypass, so the sonic integrity of your instrument is never lost.Rugged full metal casing and quality switching in a small and exquisite design.Dimensions (HxWxD): 93.5 x 42 x 52 mmDC 9V Centre Negative Power Supply (sold separately)