> For the complete documentation index, see [llms.txt](https://itsgreq.gitbook.io/headphone-measurements/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://itsgreq.gitbook.io/headphone-measurements/sony/mdr-7509hd.md).

# MDR-7509HD

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FDMAL6QxOWm6MYo6APXRK%2FSony%20MDR-7509HD.png?alt=media&amp;token=a5cd82ab-eff1-4e1e-9436-5fbb12cf2cbc" alt=""><figcaption></figcaption></figure>