The Joyo Rated Boost JF-301 is part of the much anticipated Ironman series: well built tiny tone machines that are guaranteed to surprise with their sound quality and price point. The Joyo JF-301 Rated Boost is here to push your amp to beautiful overdriven overtones while maintaining your guitar's inherent natural sound. Dial in crystal clear volume or add a little dirt and EQ to take it up a notch for your tasty solo. One special feature of the Ironman series is the cover that flips over the controls to protect your carefully dialed in settings from getting changed accidentally. Set it and forget it! A nice little bonus is the LED light glows through the cover when engaged for a cool visual effect.