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The Philmore CA59 is a type of connector used in a variety of audio, video and power applications. It is a three-pin, screw-terminal connector typically used on the ends of cables or other devices where a reliable connection is needed. It is widely used in audio-video applications, electronic instruments, and musical amplifiers. The CA59 has two insulated components which make a firm connection when mated. It has three contact points, two positive (+) and one ground (–). The contacts are usually made with a standard flat-head screwdriver. The CA59 connectors are often used in combinations with other Philmore connectors, such as RCA, F-type, BNC, and others.