VOCU's ultra-compact volume pedal. Capable of boosting up to approximately +12dB. Smooth volume control is achieved via a light sensor. Features knobs to set the level at both the fully open and fully closed pedal positions. Buffered bypass. The VOCU Baby Volume Pedal is an active volume pedal designed to be the world's smallest pedal volume. It allows for stepless control of the volume from mute to 1% to 100% to a maximum boost of approximately +12dB, all within a small volume pedal using a light sensor. Due to its high-impedance input / low-impedance output design, it can be used with any equipment without worrying about impedance matching, and if placed between effects pedals with poor matching, it also functions as a buffer amplifier. Note: This unit does not have a built-in battery for the sake of miniaturization. To use this unit, you will need to prepare an external power supply such as an AC adapter (DC9V Center ?; 30mA or more) separately (one DC cable is included). Type...Electric Guitar