If you get an M-Scaler, it will undeniably change the sound of your system. It is not a subtle change. I am sure folks with hearing loss might struggle to hear the change, but if you have undamaged hearing and are paying even vague attention, you will hear a difference with and without an M-Sclaer.
That being said, whether it is an "improvement" is debatable. When I have added an M-Scaler to my system, I personally like the change. Alternatively, my wife loathes it and feels that it sounds unnatural with instrumental music like Jazz, classical or even rock. She does feel it makes electronic music sound much better.
The point is, it is a matter of taste. Have confidence that it will alter the sound. Whether you like it better, only you can tell that.
That being said, whether it is an "improvement" is debatable. When I have added an M-Scaler to my system, I personally like the change. Alternatively, my wife loathes it and feels that it sounds unnatural with instrumental music like Jazz, classical or even rock. She does feel it makes electronic music sound much better.
The point is, it is a matter of taste. Have confidence that it will alter the sound. Whether you like it better, only you can tell that.