Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued bluetooth 44 oz) Power System 5V/1A

44 oz) Power System 5V/1A or 5V/2A Qi certified charger Battery GO pod 180mAh

Crossfeed Effect Completed by Hardware Circuit Design

CONNECT YOUR DEVICE

Perfectly drive any headphone/IEM with 4 levels of gain and up to 15Vrms output

Sennheiser HD 660s Audiophile Headphones (B-Stock) - Discontinued bluetooth 44 oz) Power System 5V/1AHD 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