VACOUSTIC 6 Pack - Acoustic Studio Foam Round C-Panel 2" X 12" X 12" Sound Absorber Soundproofing Wall Foam Acoustic Panels Noise Reduction Acoustic Treatment Acoustic Control Sound Dampening

Does the trick. You need more than one pack of these to make a difference even in the smallest room. These are not magic. You need to consider placement, how much wall space you are treating in relation to the wall space, and other material in the room. It takes a lot of ANY type acoustic damping to change a room significantly. If you have hard floors, get a thick rug. If you have windows, get thick curtains. This isnt soundproofing. Its acoustical treatment.

Cheap no play wood backing like they said I'm returning

Solid, quality product. As with most acoustic panels similar to this, it may be difficult to have them stick to the wall with double sided tape. Applying spray on adhesive between a piece of paper and the panel and then using double sided tape between the wall and paper seemed to work.

Arrived without adhesive so I couldn’t use them. Super inconvenient return policy and was too busy to get out to drop zone before time expired. Tried nailing it, using OTC adhesive, and didn’t do much for suppressing the noise as I had hoped. Now being used as packing material. Shrug.

I had purchased other soundproofing online because it looked and I got it and it was terrible.This time I was looking for quality and I got it right! Look no further!

Bought these for my son’s home studio. These work great for absorbing sound and preventing echo and bounce in the room. He’s getting a much better sound now!

They work surprisingly well for foam. It's got nice density and helped cut a lot of the reverb from my listening space.

One of the foams had a big crease in it.