Has drastically improved the sound of my keyboard. I'd recommend these foams to everyone. The space between the stabilizers needs to be trimmed to have a bigger hole however, as the stabilizers would get stuck because the foam was so tight around the metal bar. This was solved in about 30 seconds, however.
I picked this up for my DZ68 in the Tofu65 case, and it makes a massive difference in the sound of the keyboard. The foam almost completely removes the reverb so you get to hear your switches instead of that awful pinging sound. Thanks MKUltra!
Doesn't make your board quieter, but definitely makes it sound fuller. If you're going with an aluminum case, I would strongly recommend. Definitely takes some tinniness out of the traditional reverb aluminum cases have.
DZ68RGB Foam Combo