> 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/yamaha/yamaha-rh-40m-modified.md).

# RH-40M - Modified

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FM3SUWSPfWVD0su2vNClQ%2FYamaha%20RH-40M.jpg?alt=media&amp;token=21fc2b6c-477d-4e98-893c-c527fc47714c" alt=""><figcaption></figcaption></figure>

![](https://31762434-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M4NrSugToAwYkW0a8hV%2F-M4P2EddDH7_HeDGEJna%2F-M4P2UyeqXxHABkF-cJO%2F_DSC5494.jpg?alt=media\&token=2af4bf4e-0dd3-479e-828d-9ba0bcda80aa)