Axel Grell, Sennheiser?s Audiophile Portolio Manager and the designer of the HD 580, HD 800 and Orpheus family of headphones, has quietly left Sennheiser after 27 years. He started a new consultancy called Grellaudio (grellaudio.com). Is this the end of an era for Sennheiser? Or the start of something new and exciting?
