Review on Diversitech Eva Anti-Vibration Pad – MP 4E Series by Christian Poojary

I bought these to protect the new hardwood floors in my house from heavy speakers/subwoofers. They perfectly isolate floors from vibrations. Cleaned up the sound of my large 18" 1500W RMS subwoofer. Unfortunately they also left small black marks on the PU surface of my new wood floors that can't seem to be removed. Great for vibration isolation but if you use it on wood floors, put a piece of cloth or something else between the floor and the device to avoid black stains.