[gloosx]

I think every microphone will give you some characteristic atmosphere and space for the voice recorded, so it's kind of a part of a sound baseline. It's only annoying when there is too much, but when it's only on the edge of perceivable it adds that naturality to the sound. You can reduce it to the minimum of course, but you cannot completely eliminate it. That slight room tone or mic signature kind of glues everything together, making it feel more real.