BNC transfers a very similar signal as RCA, but the connection is different. This adapter allows you to convert your BNC audio or video line to RCA. In a small form factor metal housing, this single unit is just over one inch long and is designed to be non-intrusive as you use this adapter on a cable or electronic device.
BNC is a connection type commonly used on professional and commercial audio and video equipment - though it is extremely similar in use and quality as RCA. Most video and audio devices use RCA connection types such as composite, component, and L + R audio on TV's, DVD players, stereo units, and more.