The open headphone shell is open, the open headphones are light, the sound is natural, and the pressure is not felt.

Because it is open, the sound leaks out, and the outside noise will enter.

Semi-open headphones refers to the opening of the headset is selective, that is, only certain frequencies open to other frequencies is closed, or in a certain direction is open in other directions is closed. Closed headphones shell is closed, to prevent external sound into the outside, sound leakage reduction, in the professional monitoring of the use of a lot. The sound is generally very clear, the detail is rich, the low frequency response is very good, for most people closed headphones wearing a closed-only sense.