The MDR-CD900ST is a fully professional monitor headphone jointly developed by Sony, the world’s most advanced technology company, and Sony Music Studios, a company with deep knowledge of sound creation. It reproduces the original sound exactly as it is, with sharpened contours and sound images. Since its release in 1989, it has been used in many recording studios, proving its high reputation and reliability.

The MDR-CD900ST was originally developed for use at the CBS Sony Shinanomachi Studio (now Sony Music Studios), but it was eventually sold for commercial studio use and is now used in many recording studios. It has also gained the trust of artists as well as studio personnel, and has been featured on TV, radio, and in magazines, resulting in a flood of purchase requests from the general public. In response to this demand, sales to consumers began in 1995, and continue to this day.

The use of a proprietary driver unit has significantly improved the resolution (detection limit) required for monitoring. It reproduces the subtle differences in sound contours, localization, echo spread, and more, delivering “real sound” to your ears.

The headphones use an independently developed driver unit that thoroughly pursues the quality and durability required in the professional world of recording studios, post-production stations, broadcasting stations, etc. This has succeeded in achieving clear sound quality with little distortion and an intact image of the original sound.

By strengthening the input resistance (maximum input: 1,000mW) and frame cover, we have focused on sound quality and achieved durability and stability that can withstand use in recording studios, broadcasting stations, etc. By pursuing various conditions from a professional standpoint, it has earned high praise and trust from studio engineers and musicians.