I received my fourth E-Mat. Had plans on leaving under a ss amp that is out of service. I decided to place under my SR PowerCell with the glass too yesterday. My system definitely sounded better but I could tell the effect was varying of time. Well this morning, the E-Mat had settled in for about 14 hours and now my reviewing system sounds incredible. Talk about more natural, tighter bass, better stereo separation and improved soundstaging. Wow. I'm wondering how it would sound under a Tranquillity Base. If you have components that are $5K or more, you owe it to your self to evaluate the E-Mat and for those with a budget system, the smaller version should be the ticket.