1.Stereoscopic sense, the three-dimensional sense of sound is mainly composed of the sense of space, direction, hierarchy, and other auditory sensations. The sound that can provide this auditory sensation can be called stereo.

2.Sense of positioning, good sense of positioning, can allow you to clearly feel the direction from which the original sound source is emitted.

3.The sense of space and hierarchy, also known as the sense of being out of the box or the sense of being connected. The sound I heard didn’t seem to come from two speakers, but from a real person singing in one position. The sense of hierarchy can be said to result in rich and clean high pitched sounds that are not harsh, full mid frequencies, and thick low frequencies.

4.Generally speaking, timbre is determined by both loudness and pitch, and each vocal system has a different timbre, which is the personality and soul of this system.

5.The sense of thickness refers to the sound that is moderate in volume, appropriate in reverberation, low in distortion, honest, rich, and thin to the point of being like paper, which is definitely not good.

In addition to the points mentioned above, there are also other perspectives for judging the quality of sound, such as the intensity of the sound, whether it is loud, whether there is an immersive feeling, and whether it sounds dry or not.