He may be a media-savvy new technology evangelist these days, but back in the mid 90’s Richie Hawtin was the kind of sketchily dark character you would think twice about leaving your kids with. The Canadian producer was known during that period for the gloriously haunting ambient techno of FUSE — which occasionally and unforgettably on “Substance Abuse” veered into the kind of deranged acid that this installment of BBH focuses on — and the complex poly-rhythms and LSD-referencing menace of his Plastikman project. Yet despite the rumors of acid tabs embossed onto copies of his debut Plastikman album, Sheet One, there was a far more belligerent side to his character: Circuit Breaker. This double pack, released in 1996, charts the laying to rest of the Probe Records sub-label, an outlet that had allowed Hawtin to explore this grungier, edgier identity.