Donner Tremolo Guitar Pedal, Golden Analog Effect Mini Pedal for Electric and Bass,True Bypass

【Golden Tremolo】The Golden Tremolo is inspired by the iconic optical tremolo sound coming from legendary US-style combo amps, giving you a deep, natural, pulsing tremolo sound. 【Easy, flexible controls】The Golden Tremolo features an easy-to-use three-knob tone control: DEPTH (effect depth), RATE (effect speed), and BIAS (waveform bias) for use in different scenarios. Each knob gives you a wide control range. 【Whole aluminium-alloy】Whole aluminum-alloy classic, stable and strong 【True bypass】True bypass provides transparent tone. Featuring a pure analog design. Additional bias control is for detailed sound character control. 【DC 9V Jack】DC 9V Adapter power supply. (plug polarity is positive on the barrel and negative in the center). (NOT INCLUDED)