Of course, anything can be improved upon. The point is that Shinpads doesn't actually know whether his "tweak" has made things better, worse, or left them the same because he hasn't compared nor measured the standard-issue ATC model with his own under the same conditions. That is the point, and nothing but the point. If he has genuinely made improvements, fair play to him. I remain sceptical, and in any case, I can't hear any of this alleged dreadful ATC distortion which apparantly assails other people's ears.