@zufan , I hate the adjectives used to describe music. Think about it. All stereos analyze the music. That is their job. The problem is a bad analysis vs a good one.
Stereos do not have pace and rhythm. The music has pace and rhythm which in most modern cases is under the control of the drummer. (or a click track)
In order to know how a system is performing you have to have a known reference. Most of us have no reference because we have no idea what our systems are doing. They have not been measured. We are out to sea without a compass. My reference is flat and equal. Flat does not sound best. I boost the bass a bit and roll of the high end a little. The two channels always have to have exactly the same frequency response curve. Two identical speakers will always be a little different Then the situation can get a lot worse because you put them in different locations. You locate sounds by volume and phase. If the volume (amplitude) of one speaker is louder at certain frequencies those frequencies are going to shift to the louder speaker. What do you think that is going to do to the image. Just because you hear a guitar in the left and a piano in the right does not mean the system is imaging well.