1、High Peak Mode: High peak mode will boost up the bottom end. When increasing the distortion via the DRIVE knob, you will get more volume and a slight increase in high mid range (around 3.5KHz). 2、Low Peak Mode: Low peak mode will colour the original sound very little but works well for clean boosting. 3、True Bypass: Designed to have 1/4in mono audio jacks with 470k Ohms input impedance and 1k Ohms output impedance. 4、Sturdy Shell: Full metal shell with white paint will be a pretty decoration and safely protects the effect pedal. 5、Simple Carry: With compact size and light weight, the easy storage and carry will largely simplify daily playing. Item Type: Electric Guitar Effect Pedal Material: Metal Colour: White Effect Mode: 2 modes, HP and LP. Input: 1/4in mono audio jack (Impedance: 470k Ohms). Output: 1/4in mono audio jack (Impedance: 1k Ohms). Power Supply: 9V DC transformer (inside negative and outside positive). Operating Current: 6 mA 1 x Electric Guitar Effect Pedal 1 x User Manual 1 x Sticker