The Mooer Ultra Drive MKII Micro Distortion is an advanced distortion in an extremely pedal board-friendly design. It has three modes: Original, Extra and Ultra. Original Mode provides a strong hard-edged distortion with a low noise level. Extra Mode gives you a high gain sound that aligns more with a tube-like distortion. Ultra Mode delivers fatter overdrive tone with a wider distortion range. It's full metal casing makes it durable and road ready and like most great effects pedals it has true bypass.