Anyone tried Marigo VTS "Tuning Dots"??


I'm wondering if this fairly inexpensive room acoustic "treatment" is effective.

Anyone who has tried and can elaborate, I would greatly appreciate.

Thanks to all & any responses.
denf
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.
I have a friend using the large Marigo discs on the glass windows directly behind his Soundlab speakers. There is no doubt that it improved imaging and tonal balance as well.

I experimented with the green and black Marigo dots on several pieces of electronic equipment with huge improvements by "dotting" the caps in my Atmasphere MA2.

This tweak works well but requires a bit of experimenting. Too many dots (or wrong type) will suck the life and dynamics from the music, the same as applying too much weight on top of equipment to achieve damping.
I have Marigo dots on my walls, windows, and loudspeakers. They seem to add drama and/or detail with every application. I have not yet tried them on any of my electronics, but look forward to doing so. I also look forward to adding additional dots on my walls and windows.

Albert, I would appreciate hearing a more detailed account of what the dots have done for your amps as I expect to do the same someday. God bless.