The Sennheiser HD 650s are a set of high-end, open-backed, over-ear headphones. The HD 650s implement their open-backed design in an aesthetically interesting way, covering the backs of the ear cups with a grey grate which offers barely any physical barrier between your sound and the world around you. This will create a large, open soundstage, but means the headphones won't be good isolators. The headphones also feature a removeable cord.
|Sensitivity (at 1 kHz)||103 dB|
|Impedance (at 1 kHz)||300.0 Ohm|