. ▁Later ▁on ▁High ▁End ▁Systems ▁was ▁founded , ▁owned , ▁and ▁managed ▁by ▁Low ell ▁F ow ler , ▁Richard ▁Bel live au , ▁David ▁Bla ir , ▁and ▁Bob ▁Sch acher l ▁before ▁it ▁was ▁bought ▁by ▁Belg ium - based ▁Bar co ▁in ▁ 2 0 0 8 . ▁ ▁Early ▁history ▁ ▁Low ell ▁F ow ler ▁founded ▁Black stone ▁Audio ▁Visual ▁with ▁his ▁wife ▁Sue . ▁Richard ▁Bel live au ▁set ▁out ▁to ▁install ▁more ▁advanced ▁light ing ▁equipment ▁in ▁night cl ubs , ▁when ▁he ▁began ▁working ▁for ▁Black stone ▁Audio ▁Visual . ▁ ▁Black stone ▁Audio ▁Visual ▁moved ▁from ▁central ▁Austin ▁to ▁offices ▁in ▁north ▁Austin ▁in ▁the ▁mid ▁ 1 9 8 0 s . ▁By ▁this ▁time , ▁Bob ▁Sch acher l , ▁who ▁was ▁one ▁of ▁the ▁first ▁employees ▁of ▁the ▁company , ▁had ▁become ▁a ▁partner ▁and ▁David ▁Bla ir ▁joined ▁as ▁well . ▁The ▁three ▁partners ▁installed ▁P uls ar , ▁Clay ▁Pak y , ▁Co em ar , ▁Opt ik inet ics , ▁J EM , ▁and ▁other ▁European ▁br ands ▁that ▁were ▁difficult ▁to ▁find ▁in ▁North ▁America . ▁At ▁the ▁same ▁time , ▁Bel live au ▁began ▁design ing ▁and ▁building ▁loud spe akers ▁especially ▁for ▁night cl ubs ▁and ▁disc oth è ques . ▁Black stone ▁Audio ▁Visual ▁special ized ▁in ▁installing ▁high ▁end ▁audio , ▁video , ▁and ▁light ing ▁systems ▁in ▁night cl ubs ▁all ▁over ▁the ▁United ▁States . ▁But ▁Bel live au ▁was