Open (with no insulation) or closed (passive noise insulation) or semi-open (intermediate version). Open headphones sound more airy and provide a wide stage, closed ones provide noise isolation and amplify low frequencies.
A cable for a balanced (symmetrical) connection allows you to neutralize the negative impact of cable length on signal transmission, and also has a beneficial effect on the final sound.
The opportunity to disconnect the standard headphone cable makes it possible to experiment with different wires.
It allows you to fold the headphones so that they take less space in your bag
Most of the headphones are dynamic but there are electrostatic, isodynamic, etc.
You can find it on gaming headphones. A handy feature if you plan to use headphones outside the home.
Color shade: black
Connector shape: straight
Connectors: 3.5mm jack