1、【Guitar Tremolo Pedal】: Classic co emitter NPN amplification circuit, low distortion sound, retro sweet and dynamic, able to be gentle and wild. 2、【Versatile Controls】: FREQ controls the output of vibrato frequency effect speed, adjusts the speed of vibrato effect, and creates different musical atmospheres; AMP controls the deep output of the tremolo effect, adjusts the intensity of the tremolo effect, making the sound more rich and expressive. 3、【Robust Metal Shell】: This electric guitar effect pedal is housed in a sturdy metal shell, ensuring its durability and longevity. It\u0027s designed to withstand the rigors of live performances and constant use, making it a reliable choice for both professional musicians and hobbyists. 4、【6.35mm Input/Output Interface】: The pedal features a standard 6.35mm input/output interface, making it compatible with most electric guitars and amplifiers. This ensures seamless integration into your existing setup, providing you with a versatile tool for enhancing your sound. 5、【High Input and Output Impedance】: With an input impedance of 1M Ohms and an output impedance of 10K Ohms, this pedal is designed to handle a wide range of signal levels. It operates on a DC 9V power supply with a current draw of less than 100mA, making it an energy-efficient addition to your pedalboard.