What room treatment product have transformed your room or audio system?


I've been researching and looking more into room treatment products. Wondering what product really worked for you?
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Showing 1 response by millercarbon

Helmholtz is fine and I am on board but can we have a how-to? 

The ones that really worked the most for me are Synergistic Research HFT. I have the full Speaker Kit on both speakers, and I forget what level they call it but several sets in the room. If you look close you can see some of them on my system page.   https://systems.audiogon.com/systems/8367