Sennheiser HD 630VB Over Ear Silver Headphones Adjustable Bass 505985, NOB New Opened Box Condition. Contents: Accessories in retail box. Description The Sennheiser HD 630VB is a closed-back, around ear audiophile headphone with variable bass adjustment and call control. It offers an audiophile listening experience, with the dynamic bass sound that listeners demand. Styled with Sennheiser s clean, contemporary design ethos, the HD 630VB is crafted from premium materials including strong, lightweight aluminum ear cups, yokes and sliders. Th