I use various dots in my system to very good effect. Also, I treated my room with the tuning dots. The most noticeable effect was a much improved lower frequencies, especially in speed and detail. I also heard more resolved images within the soundstage. I suspect the tuning dots work well in rooms that have the typical 1/2 inch sheetrock nailed at intervals on studs. These type walls flex like a drumhead when struck or pushed with your hand. I think the dots help damp these type walls. BTW, I also experimented with magnetic business-card holders which have an adhesive side to which the card is attached. These seem to have a similar physical characteristic and effect of the tuning dots, at a fraction of the cost. You can find these card holders at office supply stores.
