I know that horns create an odd looking wav form which is lopsided on the push side. I recently did a tape where I've got an 9 piece jazz band (8 brass, with a set of drums). The drums look normal, but the brass doesn't (so far so good). When I run DC offset, it shifts to where the brass looks less strange, but now the drums are offset, sometimes.
So in this instance, is it just not worth doing a DC offset? Does it actually improve headroom or is it a waste in this case? My gear is solid, so I'm not worried about electrical offset being created upstream. I don't think it matters, but if someone can confirm, I'd love to know.