what are you currently using to power them? i owned a pair of avant gardes and used several different amps with them. i found they sound best with solid state amps, but they did perform well with high quality tube amps as well.
I have heard the Avante Gardes many times, with different amps. My friend, who owns a pair, drives them with a pair of Kora tube monos. This is by far the best I have ever heard them sound. Kora is no longer distributed in North America, if I'm not mistaken, but their amps do come up occasionally here on the 'Gon.
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