The Stinger SI42YM is a 4000 Series RCA Y-adapter that converts a single female RCA connection into two male RCA outputs for line-level audio signals. It is intended for use with head units, processors, amplifiers, and other devices that use standard RCA connections.

Built with oversized OFC conductors, continuous C3 connection construction, split-tip connectors and shoc-krome plated contacts, the adapter focuses on reliable signal transfer and durability. Directional twisted-pair winding, a clear low-friction jacket and molded strain reliefs help reduce interference and simplify installation.