Feature: 1. Application: This is a bass dynamic envelope filter effect pedal, and which is also widely suitable for guitars, easy to use 2. Switching Original Sound: With unique Funky style filter effect, switchable between original sound and fuzz filter 3. Metal Shell: Effect pedal is made of all metal shell, the appearance is small and exquisite, which can save more space 4. Operating Mode: 2 working modes, Clean, Fuzz, power supply is 9V DC transformer (inside negative and outside positive) 5. Basic Specifications: Input Is 1/4in Mono Audios Interface (impedance: 220k Ohms), Output Is 1/4in Mono Audios Interface (impedance: 1.4k Ohms) Specification: Item Type: Bass Filter Pedal Material: Metal Colour: Silver Working Mode: 2 (Clean Fuzz) Input: 1/4in Mono Audios Jacks (Impedance: 220k Ohms) Output: 1/4in Mono Audios Jacks (Impedance: 1.4k Ohms) Power Supply: 9V DC Transformer (Inside Negative and Outside Positive) Working Current: 7mA. Package List: 1 x Bass Filter Pedal1 x User Manual1 x Sticker