It slices! It dices! It mows your lawn and fixes your broken marriage... Ok, I'm not really sure how to review a coupler, other than I can say if you plug an RCA cable into each side, TADA! - you will get signal to transfer from one end to the other. And, that it hasn't fallen apart, sprouted fungi, or ran away from home to join the circus yet. So... There's that. Cheers.