The 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. Easy Installation Our pads use the same mounting method as the stock pads, utilizing a plastic mounting ring to ensure easy installation and snug fit. Be sure to check out our installation video guide as well! Our Materials Dekoni Audio spent a lot of time designing and refining this ear pad to be the most comfortable and best sounding velour ear pad available today. By using a tighter velour, Dekoni made the ear pad react more like a traditional leather or protein leather ear pad in that you don’t lose the bass frequencies or the isolation as seen with most velour ear pads, all while retaining the comfort and coolness of velour. Dekoni Audio Elite Sheepsknin Dekoni Audio Elite Fenestrated Sheepskin Dekoni Audio Elite Hybrid Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 12 4.5 out of 5 stars 12 4.5 out of 5 stars 12 Price $79.99$79.99 $89.99$89.99 $89.99$89.99 Series Elite Elite Elite About the Frequency Chart and Pad Dimensions What You'll Hear Tempered sub-bass Increased mid-highs A note about our Frequency Charts The data is presented raw and uncompensated, except to cancel out the ear response of our microphone model head, and it’s the average data from 5 slightly different seatings of the headphone. Some measurements by others are made without headphones actually sitting on ears, or with adjustments to reflect the effect that the shape of a generic inner and outer ear will have on the sound waves – we don’t do that, because as every experienced audio enthusiast knows, we all have different ears! About Uncompensated Graphs The first thing to understand about an uncompensated graph is that it will sound different to the listener than the graph will show. For one, we haven’t smoothed our graphs, so there are many peaks and valleys that would have been lost information. There are other factors as well, such as the effect from the earcups and pads resting against a head and around ears, the human ear’s extra sensitivity to vocals, and that the shape of our ears and depth of our ear canals can actually amplify certain frequencies. For the purposes of swapping earpads, it is enough to say that a flat line along the 0 dB line wouldn’t sound “good” on these uncompensated graphs, a dip in the midrange is to be expected since human ears are more sensitive to that region, and mainly we want to focus on how a Dekoni pad compares to the Stock pad.