These are being discussed in GR Research circle. I just thought I would post here. I replaced GIK A4 panels with the ATS diffusers. I was looking for a more open sound than I was getting. I ordered the ATS diffusers and they arrived in a couple days. Very well packed. I’m extremely happy with both the service and the improvement in sound I was looking for. I’ve raised them about 7” from the floor.
Don P.
