The Sennheiser HD 555 headphones are over-ear headphones meant for use with a home audio system. The headphones themselves are a mix of black plastic and cloth, with a bit of silver on the exterior of the ear cups.
The cups have a large, black, oval grating over their exterior and removable cloth pads on their interior. Removing a pad lets you peek at the sound element through a thin piece of cloth and a plastic ribcage. This is the closest you'll get to the sound element.
|Sensitivity (at 1 kHz)||112 dB|
|Impedance (at 1 kHz)||50.0 Ohm|