Notwithstanding their "solid-stateness," the now discontinued Sunnn Beta Lead amps from the late '70s and early '80s have a stellar reputation among hard rockers, mostly because of Curt Cobain, who used three of those heads when gigging, and they are starting to get rare and pricey. The SNK Pedals CMOSludge is an overdrive pedal voiced after those amps.... Click on the title for more