> 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/sennheiser/hd-25-1-ii.md).

# HD 25-1 II

Many thanks to [Angelic ](https://www.head-fi.org/members/angelic.10777/)for the loan.

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FWVdukzi3D1k76hltoQGG%2FSennheiser%20HD%2025-1%20II.jpg?alt=media&amp;token=f45f21f1-6a1a-4542-bb6e-03607899fe4f" alt=""><figcaption></figcaption></figure>

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2F11EEjNqgwqnz7Z1e5hLV%2F_DSC8439.jpg?alt=media&amp;token=1fb28885-5219-4489-afcb-197903aa6531" alt=""><figcaption></figcaption></figure>