Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued professional They also fit the Monoprice

They also fit the Monoprice Monolith M1060

In a market dominated by plastic and metal finishes

" From its roots of working with hearing health professionals to produce custom-fit products for hearing aids and protection

Titanium alloy construction

Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued professional They also fit the MonopriceHD 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