My transport has "tuning dots" what are these?


I got an older AMC I am using as a transport and I was told it has expensive tuning dots inside, please explain what these are or might be and what they do ...thanks
chadnliz
Tuning dots are marvelous little things that can have a surprising affect on most anything associated with an audio system. I have used the Marigo dots with success and at one point actually got a little carried away with too many. Overall, though, a great tweek to get that last 5% out of a good system.
Yes the whole Tuning dots tweak may seem silly to some. Yet there is a principle to their schematic application priciple to applying them. My first experience with the Marigo's was years ago on a turntable, without them, then with. The tonearm looked like it had the measles, or rabbittitus. But they did make an auidible difference. I would just leave them as is, since you might not be able to remove the adhesive residue once partially removed?
Back when the dots wrere just comming into vouge the owner of the high store I dealt with advised me to use quarters on my speaker bases for tuning to save money, they also did have a positive effetct.
Has anyone got experience using the tuning dots on speaker cabinets and/or drivers, specifically Avalon Eidolons? I am using the Marigo "super dots" on all glass windows in my listening environment, which made a huge beneficial difference. Glass always adversely affects sound, so any sort of damping to that has to be beneficial, however, my concern is about application to a driver causing a "deadening" of the driver response.