IO-RA is the aluminum version of Triad-Orbit’s groundbreaking IO-R quick-change coupler. IO-RA retrofit couplers are 50% lighter than the original steel IO-R—a major consideration for live sound/production applications. IO-RA retrofit couplers also cost 50% less than IO-R, making them affordable to everyone. Every IO-RA is loaded with an IO-H1 hex mounting head.