Sennheiser HD 660s Audiophile Headphones (Open box) - Discontinued sports-headphones the structure of Blessing 2

the structure of Blessing 2 is simply effective and reasonable: Proprietory dual mid driver handle the midrange

It is a well-built in ear monitors for musicians and also recognized as the best audiophile in ear monitors from worldwide fans

providing maximum rejection and minimum coloration of off-axis sounds

>Impedance: 21Ω

we choose the 8 core high quality OCC cable for stable

Sennheiser HD 660s Audiophile Headphones (Open box) - Discontinued sports-headphones the structure of Blessing 2HD 660S The perfect blend of power and control. The powerhouse open back headphone Connects you to the deepest corners of your music collection. Hi fidelity sound Open back design 42mm transducers Luxurious comfort Detachable cable A Direct Connection To Your Music Known for their engaging signatures and liquid smooth response, HD 660S predecessors HD 650 and HD 600 shattered performance barriers in the audiophile headphone category. The HD 660S