The Walrus Audio Emissary Parallel Boost features two independent boost circuits running in parallel to work together to help give your tone a real “sinus clearing experience”. Use one or the other by itself, or mix any combination of both by turning up each knob to the desired level. The top knob controls the volume for the “bright” boost circuit which is a clean, high headroom JFET boost, with a slight emphasis on higher frequencies to liven up your tone. The bottom knob controls the volume for the “mid” boost circuit which features a targeted boost at either 1kHz or 800Hz selected by the toggle switch. Power requirements: 9VDC (100mA minimum). Using an isolated power supply is recommended for powering all Walrus Audio Pedals, daisy chains are not recommended. Video: https://youtu.be/GMhQ0ycaL3sProduct Specs Item Number: 26815 Make: Walrus Audio Model: Emissary Parallel Boost Condition: Brand New Finish: Blue Categories: effects-and-pedals ⇒ overdrive-and-boost ⇒ pedal Function: PreAmp Made In: United States MPN: 900-1041 UPC: 810424030749 Modular Grid: Pedals ⓘ + Dimensions*: 66 mm wide 121 mm high Power*: 100 mA / 9 V DC / Negative Center * User contributed details