Amplifier

The amplifier can simply understand as a device that amplifies the electrical signal, that is, you put into it an input signal, it will amplify that signal and bring out the transmitter (speakers, headphones).
Amply has many types, depending on the function of each type that people named after it for easy to remember. Currently there are 5 popular forms: Pre-amply, Power Amply, Integrated Amply, Dual mono Amply, Monoblock Amply

The amplifier will also provide power to the speakers in the system, and is also responsible for processing audio signals to suit the needs, such as enhanced bass, mid or treble; add echo effects (echo), parody (repeat) …