This has had to have come up --where an interconect differs on the units.I have seen an adaptor that simply passes the coax in and toslink female out--then a m/m toslink hooks you up. I don't know if this direction passes the digital signal without having to convert to light images? Is it necessary to convert when adapting the other way? Do i have to buy the $25? adaptor to interconnect these devices that i'm running thru an xbox 5.1---tia Brent