SennheiserDr. Yasmin PredovicAdriana Barrows HD 660S OProf. Marvin Boyer DDSpen BackDr. Tom Wolff DDS AudiophiBetty Swaniawskile HeadphonesLonny Purdy IV

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