The general consensus seems to be that the Sundara Closed is found wanting.
As Custom Cans has done some measurements and reviews comparisons, how do people feel about the foam mod they introduced to help with this on their YouTube?
Can anyone who performed the mod shed some of their thoughts?
I haven’t tried the Sundara mod, but I have tried their DT990 mass loading and damping mod and it made a massive difference so I can vouch for their work.