My diffusers are Schroeder based designs, which have been well proven in the top recording studios, concert halls, and media rooms. Perhaps I should let my customer's remarks fill in some performance details. Here is a review from Rob S., I don't think he would mind being known as himself rather than "unknown".
"I thought I was limited in what I could achieve in my listening space by a wide open room that was also very shallow. After mounting this large diffuser on the back wall it was as if the space behind the listening position had expanded by 3x. The effect was quite dramatic especially the enhancement of lower frequencies, and imaging of stereo content. While my wife was skeptical (I had to remove a piece of art she liked in order to mount the diffusor)even she could even tell the difference in the listening. The upright bass in The Raconteurs "Old Enough" sounds as if it is in the listening room where before I could never seem to get it sounding quite right, it was either flat or too boomy despite having tried several of another manufacturer's absorption solutions in several different arrangements."
