Auralex Studiofoam Designer Kit Charcoal Gray The DST-114s are also 1' x 1's that serve as the ideal design complement to the 112s and other DST Studiofoam products. They can easily be cut in 3" shingles, allowing for a bunch of creative options when used singularly or with 112s. The two most commonly-used sound absorption materials are high-quality acoustic foam and specialized acoustic fiberglass The Auralex Studiofoam Designer Kit uses an advanced design to dampen rogue sounds in your studio.