Denon DL103 MC phono cartridge is the only moving coil cartridge that has withstood the test of time. Developed by Denon in collaboration with the Japan Broadcasting Corporation Technical Research Laboratories as a high-performance, high-reliability phono cartridge for broadcasting purposes, the Denon DL103 has been in continuous production since 1963.While other “wonder” cartridges have come and gone, the DL103 continues to thrive by offering musical rightness. There is no other cartridge that comes close to its legacy. The Denon DL103 phono cartridge has been in use for a long time in public and commercial AM and FM broadcasting stations. It was used by EMI and Decca as their reference for evaluating LP sound quality. It’s been evaluated, reviewed and praised by many publications and end-users.t’s been around for over 40 years. Along the way, it has captured the hearts and minds of technical experts, audiophiles and music lovers. It’s a testament that greatness endures. This is what comes with your ownership of a DL103. It is a phono cartridge that you will enjoy for a very long time.