Sound Deadening Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

KILMAT is the best-performing sound deadening brand in July 2026, moving 6,000 units across 3 ASINs for 35.7% of Top 10 volume. Amazon Basics follows with 3,000 units (17.9%), ahead of Focusound on 3,000 units (17.9%).

With 6 brands splitting the Top 10 and 71.4% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $14.69 to $53.31, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, 3 ASINs forced its way in: B07XMF2V77 booked 3K units at $14.69.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.