Multi-function guitar effects pedal set of 3, including Flanger, AC Simulator, and Wah. AC Simulator 1. Analog effect for acoustic guitars. Converts the original sound of an electric guitar into a realistic box organ sound. 2. Adopts advanced analog processing technology for acoustic guitars. 3. 3 cabinet modes: Piezo / Standard / Jumbo. Metal shell Ultra-small and exquisite design True bypass Specifications Operating modes: 3 (Piezo / Standard / Jumbo) Input: 1/4 inch mono jack (Impedance: 1MΩ) Output: 1/4 inch mono jack (Impedance: 1kΩ) Power supply: DC 9V (center minus) Current consumption: 17mA Dimensions: 95mm (D) x 45mm (W) x 53mm (H) Auto Wah Digital auto wah sound effect pedal, makes your voice powerful and highlights your musical personality. Creates a powerful wah rhythm with the simplest rhythm and tonic counterpoint. The wah pedal produces a powerful "wah-wah" rhythm. Equipped with 3 different frequency wah effects, allowing you to experience subtle changes within expressive phrases. Auto wah sound effect with powerful adjustment functions 3 peak operation modes Metal shell Very small and exquisite design True bypass Specifications Input: 1/4 inch mono jack (Impedance: 10KΩ) Output: 1/4 inch mono jack (Impedance: 1KΩ) Power supply: DC 9V (center minus) Operating current: 3mA Dimensions: 95mm (D) x 45mm (W) x 53mm (H) Analog Flanger Classic analog flanger guitar effect pedal. It is a circuit of analog filter. Wonderful sound that cannot be expressed in words, that kind of feeling Blue sky and white clouds, the refraction of the sparkling sunlight, the whole world may be isolated by beautiful sounds. Specifications Input impedance: 1 M ohms. Output impedance: 520 ohms. Operating current: 13mA. Power supply: 9V AC adapter. (Not included) Dimensions: 95mm (D) x 44mm (W) x 48mm (H). Weight: 240g (with box)