The JOYO JF-309 Boogie Master is a distortion pedal designed to emulate the sound of a high-gain amplifier. It offers a wide range of overdriven tones, from subtle breakup to full-on distortion, making it a versatile choice for guitarists seeking amp-like sounds. Great for classic rock and modern metal. This pedal gives you the tones of a Mesa Boogie amplifier without the need of a Marshall BluesBreaker.