Velour Replacement Ear Pads for Sennheiser HD820 Series Headphones. The Sennheiser HD820 are Sennheiser’s counterpart to the beloved HD800 and 800S, sporting the same sleek design with a beautiful glass panel to turn these cans into truly high-end closed-backs. Dekoni looked to add to this prestige with their line of earpads for the HD820, giving audiophiles the opportunity to tune the HD820 to their liking. Dekoni Audio spent a lot of time designing and refining velour ear pad to be the most comfortable and best sounding velour pad available today. By using a tighter velour, Dekoni made the ear pad react more like traditional leather so that you don’t lose the bass frequencies or isolation seen in most velour pads, all while retaining the comfort and coolness of velour.