We bought a car, which requires a running-in period of several thousand kilometers. We also bought a pair of speakers, which need a certain amount of time for seasoning. The completion of an audio-visual system similarly requires a period of adjustment and running-in. And this process can actually be quite complex; there’s a great deal of knowledge involved in getting a system to reach its optimal state. Whether it's the subjective evaluation of sound quality or picture quality, there are many secrets that can only be imparted through experience and not easily explained (but certainly not nonsensical jargon used to confuse). It’s not easy to master these skills proficiently, requiring long-term accumulation, as well as guidance from experienced individuals.