Sennheiser HD 25-1 - Headfonia Reviews

Sennheiser's HD25-1 is perhaps a one of a kind headphone, with no other manufacturer offering anything similar to what the HD25-1 has.

Sennheiser HD 25-1 - Headfonia Reviews

Sennheiser HD 25-1 ii and beyerdynamic DT 1350 - Head-Fi TV, Episode 004

Sennheiser HD-25 – Thomann United States

Sennheiser HD 25-1 - Headfonia Reviews

Review : Sennheiser HD 25-1 II Headphone Reviews and Discussion - Head-Fi .org

hd25-1 impressions thread, Page 196

Custom-colored Sennheiser HD 25-1 II adidas (a lot of big photos inside)

Sennheiser HD 25-1 - Headfonia Reviews

Sennheiser HD25 Headphone Review: A True Workhorse, by Alex Rowe

hd25-1_balanced_def - Headfonia Reviews

Sennheiser HD 25-1 II Professional Headphone Headphone Reviews and Discussion

Sennheiser HD25-1 ii Review — Audiophile ON