パワーアンプとサウンドシステムの違いは何ですか？

People often ask such questions, are power amplifiers and speakers the same thing? What is the difference between them? On this issue, first of all, there is a difference in definition, that is, the essential difference between them. The audio system is a complete set of equipment that can restore and play audio signals. It contains multiple components, such as sound source equipment, audio signal dynamic processing equipment, audio signal amplification equipment and sound restoration equipment. The power amplifier is an electroacoustic device specially used to amplify audio signals. It amplifies low-level audio signals into sufficiently large voltages and currents to drive the speakers to make sounds. The power amplifier is a single audio device and has no additional supporting equipment. It is usually connected to the speaker.

In terms of function, the audio system is definitely more comprehensive. It can not only amplify and output audio signals, but also pre-process and adjust audio signals. The main function of the power amplifier is to amplify the audio signal to drive the speaker to make sounds. It does not directly participate in the input and processing of audio signals.

It is precisely because the audio system is a complete system that its practicality is much higher than that of a single power amplifier. It can work independently to realize the whole process from audio signal input to output. The sound system can also be expanded and upgraded as needed to meet different occasions and listening needs. The practicality of the power amplifier when used alone is relatively limited. It cannot directly restore the sound and needs to be used with sound restoration equipment such as speakers to work properly. In addition, since the power amplifier itself does not have the function of audio signal input and processing, it needs to rely on other sound source equipment when used.