Sennheiser is shaping the Future of Audio - a vision built on a 75-year history of innovation and a continued drive for excellence that is woven into our company's DNA and culture. Around the world, our employees share this passion in the pursuit of the perfect sound, creating products that exceed expectations and set new benchmarks in audio. Numerous iconic products like the invention of the first open-type headphone, the HD 414 in 1968, the MD 441 microphone in 1971 and the creation of the legendary Orpheus in 1991 bear witness to Sennheiser's unique innovative drive. Today, Sennheiser is one of the world's leading producers of headphones, microphones and wireless transmission technology. The family-owned company operates its own plants in Germany, Ireland and the US and is active in more than 50 countries worldwide.