What is the "core" ... Main unit [Car Audio System Up AtoZ]

This series recommends upgrading the car audio system for drivers who think that "drive and music are a set". From this time, we will enter a new chapter and explain how to select the "main unit". As the name implies, the "main unit" is the core device of a car audio system. There are three main roles to play. The first is "the role of reading music signals from some medium", the second is "the role of controlling sound", and the third is "the role of amplifying music signals". In other words, the "source unit," "processor," and "power amplifier" are all integrated. All you need is a speaker to complete the car audio system. By the way, in the past, there was a 1DIN device that only played the role of a "source unit", but nowadays, such a single-function type DIN-sized unit is not found in the current model. So now, almost all 1DIN or 2DIN size car audio units are "main units". However, there are some type differences. Let's introduce what types are available in order. The first thing to mention is "AV integrated navigation". As the name suggests, this has the biggest feature of having a navigation function. Other than that, there are three major types of non-navigation type "main units". One is "display audio". In other words, this is the "AV integrated navigation" without the navigation function. However, in reality, many models even omit the TV tuner. By doing so, the price can be reduced. The second is the 1DIN "main unit" and the other is the 2DIN "main unit". By the way, the 1DIN type has many model variations. And the main features of each are as follows. The advantage of the 1DIN type is that it is compact. It can be attached to vehicles that have only 1DIN of space on the center cluster panel, and if 2DIN of space is available, the extra space can be used as an accessory case. In addition, there are many models that are stylishly finished due to their compact size. On the other hand, the 2DIN machine has the advantage that the empty 2DIN space can be filled with the mechanism. In addition, the wider front face makes the rotary switch larger, which makes it easier to operate. By the way, a "main unit" that is a non-navigation type and does not have a display is sometimes called a "CD receiver". However, recently, the number of people listening to CDs in cars is decreasing, so the number of models that omit the CD mechanism is increasing. By doing so, it will be finished more reasonably. That's all for this time. From the next time, I will explain each trend of each type of "main unit". looking forward to.