Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued headphone USB The T2 Plus has been

The T2 Plus has been tuned to refine the sound characteristics of its predecessors

These design improvements eliminate slippage and guarantee reliable performance

set your Smart Ambient settings and much more

Dual headphones output and booth EQ

Internal product protection:

Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued headphone USB The T2 Plus has beenHD 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