After trying different things with a few sets of Avantgarde speakers my advice would be to upgrade your equipment,speaker wire, and or interconnect,power cords,even your AC power, but leave the speaker as is. The resale on them is not that good as it is ,if you modify them it will be far worse. The changes to the later versions are no big deal, they help justify the big price increases, and give the appearance of new models. Audience power cords and speaker wire work well on the Avantgardes
