With Sennheiser headphones the audio will always be accurate and responsive and is sure to please no matter what situation you need it for.
An open (sometimes referred to as "open back") headphone is one that uses some external airspace to reproduce life-like audio within the ear-cup. Think of it as having premium speakers next to your ears that you can control the volume for with extreme precision. The trade-off is that at extreme volumes some sound will leak out. Some of our "open back" models include the HD 800, HD 700, HD 650, HD 600, HD 598, HD 558 and HD 518.
A closed headphone isolates you from your environment and vice-versa (ie: the sound is contained within the headphones). This is perfect for critical listening or a situation where you do not want to disturb/be disturbed. Some of our "closed" models include the MOMENTUM, Urbanite XL, HD 380 PRO, HD 280 PRO, HD 449 and HD 439.