The Stanton 500A Broadcast Standard Series Micro-Fluxvalve Stereo Cartridge is a high-quality audio component designed for use in record players and turntables. This cartridge, compatible with the Stanton 500A model, offers superior stereo sound quality with its micro-fluxvalve technology. The unit is untested, but it is known for its reliability and performance in professional broadcasting settings. Perfect for audiophiles looking to enhance their home audio experience with a top-of-the-line cartridge from a trusted brand like Stanton.