The Orbit Custom is a made-to-order turntable built with the cartridge is responsible for translating the information in your record grooves into an audio signal. The platter is the spinning surface that your record sits on. It plays a large role in maintaining speed consistency and preventing unwanted vibrations from reaching your stylus. Unless you have a receiver with a clearly marked phono input, then you will need a pre-amp. We offer both a built-in and external pre-amp.