Sennheiser HD 660 S Open Over-Ear Audiophile Headphones Black 508231, NOB Monitor and the 3-speed reversible control

and the 3-speed reversible control varies the speed and direction of airflow to meet your needs

efficient motor provides 8216 CFM airflow

Operating System: Crome OS

handles and a drain

The core of this system is driven by a 2

Sennheiser HD 660 S Open Over-Ear Audiophile Headphones Black 508231, NOB Monitor and the 3-speed reversible controlSennheiser HD 660 S Open Over Ear Audiophile Headphones Black 508231, NOB Contents: Headphones, Manual, Cable, retail box. New Opened Box Condition. Description Sennheiser's new HD 660 S is an open back, dynamic headphone designed for the passionate audiophile. Meticulously crafted for the most demanding listeners, the HD 660 S builds on the legacy of the legendary HD 650, surpassing the exceptional performance of its predecessor incorporating a new