A few weeks ago Sennheiser got in touch to share the news about this new special Anniversary Edition of the HD 800 S. We’ve had it here with us for a while now but we couldn’t share the news before the official update.

Sound-wise no changes have been done to the HD 800 S’s tuning, it purely is a cosmetic change to celebrate 75 years of Sennheiser.
…
Continue here:
https://www.headfonia.com/sennheiser-hd-800-s-anniversary-edition/