SennheiserAric O'Reilly IIIJanis Gorczany HD 660S OpenProf. Sigmund Becker VHiram Adams BackProf. Hiram Walker MD Audiophile HeaStuart DoyledphonesDr. Rebeka Zulauf

150 ohm impedance that is highly compatible with mobile phones

Historic transducers significantly reduce distortion

Includes 4.4mm Pentaconn cable and 6.3mm stereo standard cable

Carefully selected headphone drivers ensure accurate alignment of left and right tolerances (±1dB)

In the fall of 2019, we have updated the package

Type: Dynamic Open Type