http://www.godlyke.com/totally-wycked-audio-effects-pedals/fly-boys/fb-05-metal
The FB-05 conjures up the 1980's in all their excessive glory. Brutal output levels and an absurd amount of gain combine to create the searing, saturated guitar tones that defined a decade.
The FB-05's Boost switch offers three ways to abuse your amp. Boost off offers a dark, punchy crunch that's perfect for chunky rhythms. Lo Boost provides the classic "scooped mids" of classic late-80's Thrash. Hi Boost cuts glass with a sizzling top-end that will cut through the densest mix or brighten up a dark-sounding guitar or amp.
Whether it's tight, break-neck rhythms or shredding solos, the FB-05 pumps out the punishing metal tones you crave. Horns!!!