1、HIGH ACCURACY: This digital preamp pedal has accurate simulation that truly affect the tone and dynamics of the preamp, stable and reliable. 2、1/4IN INTERFACE: With 1/4in mono audio input and output interface, and has dual channel sound that can store parameters independently. 3、2 USAGE MODES: The preamp effect has 2 usage modes to meet the different needs of switching channels or switching effects with a pedal. 4、CABINET SIMULATION: The effect is equipped with a switchable cabinet simulation function, which is closer to the dynamic changes of the real amp. 5、METAL SHELL: The shell is made of metal, with high hardness and wear resistance, not easy to corrode or deform, has a long service life. 1 x Effect1 x User Manual1 x Sticker Item Type: Digital Preamp PedalMaterial: MetalColour: BlackInput: 1/4in mono audio interface (impedance 1MΩ)Output: 1/4in mono audio interface (impedance 100Ω)Power Supply: 9V DC transformer (inside negative outside positive)