JOYO Vintage Overdrive guitar pedal with RC4558 chip is a representation of the classic TS808 tone. Producing warmer overtones at quieter volumes when used as a clean volume boost, and can achieve a harsher distortion as gain is increased. True Bypass provide transparent tone to keep the best tone quality, aluminium-alloy housing classic stoving varnish finish, stable and strong. JOYO has over a decade of brand reputation, and its most popular budget pedals, amplifiers, wireless systems, controllers, metronomes, tuners have won the love of guitarists all over the world and inspired people's musical dreams. Before playing, please make sure the guitar is fully connected with the pedal. in order to make JOYO pedals work properly and avoiding unexpected noise, we recommend you to purchase an extra JOYO original power adapter, or choose the other reliable brands and make sure it meets the working current requirement of single pedal.