Item Type: Rotary Speaker Simulator Pedal Material: Metal Colour: Red Input Impedance: 470k Ohms Output Impedance: 100 Ohms Applicable Power Supply: 9V DC Power Adapter, Negative Polarity Inside and Positive Outside (The adapter does not include) 160s Sound Effects: The effector has classic 60s sound effects, taking you into a retro psychedelic journey. 23 Effect Modes: This effect device has 3 effect modes, phase shifter, atmospheres and chorus. 3All Metal Case: The effector with all metal case and a very small and compact design. 4Mini Appearance: The effector has a charming mini appearance, which makes stand out among other expensive pedals. 5Rounded Sound: This is an effector that can restore natural and rounded sounds for electronic musical instruments.Note that the positive and negative poles of the effector and the power supply should be the same.1 x Effector1 x Hook and Loop Fastener1 x User Manual