Simple and direct answer: under the premise of sound source quality OK and correct playback mode, it is inevitable that a pair of speakers play well.
Birds can be heard with a speaker. With a pair of speakers, you can hear which side the bird is calling (orientation) and what kind of valley it is calling in (environment, sound field).
For each of us, the main basis for judging the sound orientation is the Interaural Time Difference (ITD) and the Interaural Intensity Difference (IID). Stereo recording technology was born and developed on this basis. The way it is recorded determines the way it is replayed. Stereo in the replay, requires two performance exactly the same speakers, open exactly the same volume, in front of the listener left, right to open a certain distance, and the distance from the listener is consistent, the most standard approach is the listener and the two speakers are equilateral triangle position relationship. The mono replay method does not reproduce the time difference and intensity difference information, so it only allows all the sound to be "squeezed into one point".
Although the "integrated" design of the speaker tries to use modern technology to "retrieve" some stereo effects, it is difficult to change the reality that it is impossible to present high-quality phantom sound sources, and the "sound is almost emitted from a point." It can be said that such products meet specific use scenarios, pay more attention to convenience and arbitrariness, and have a choice in the real restoration of sound. If you want to appreciate the original appearance of the sound work, let it unfold in front of you, there is width, depth, and layer, showing the orientation of different instruments/elements, showing the movement of sound images, then it is necessary to use a pair of speakers, and according to the position relationship described above to be placed in order to achieve. This is also a respect for the creator and the listener.
