The Pioneer OEM 6 Disc CD Multi-Play Cartridge Magazine PRW 1141 is a black CD changer designed for use with Pioneer CD players like the PD-M403 and CDX-M30. Made in Japan, this magazine can hold up to 6 discs and allows for easy switching between different CDs for a seamless listening experience. With its genuine Pioneer brand and reliable construction, this CD changer is a valuable addition to any home audio setup.