> 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/pioneer/untitled-6.md).

# SE-505

One of the world's first dual-driver headphones

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2Fors69pNe6jAtC9cia840%2FPioneer%20SE-505.jpg?alt=media&amp;token=14424166-f747-48c3-8a2f-256698d9dfc1" alt=""><figcaption></figcaption></figure>