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Actually, the best way to deal with DC offsets is to have something in the final path that blocks it. Quite often, this'll be the VCAs in a performance mixer, but you can also grab a Happy Nerding Isolator for about $100, and this'll give you isolation transformers which you can overdrive slightly to get that "big iron" warmup. And a ganged final level, too, plus the transformers also work the opposite way to help decouple the modular from any crud trying to get into the instrument via the outputs...ground loops being a big culprit here.