The Sennheiser HD 600 headphones are the audio purist’s choice for reference playback. It's an industry standard for analytical high-fidelity listening—even 20-plus years after its release. HD 600 headphones boast extraordinarily clear sound, thanks to its open acoustic design and revolutionary transducer. This transducer has been computer-optimized to reduce partial vibrations, which are responsible for a multitude of distortions.