There is a special equipment to increase the power of a signal from playback media – the amplifiers. This equipment allows increasing the power of the sound without causing a distortion. The principle of operation of the devices is based on increasing the intensity of electrical oscillations, which does not cause changing of their shape. The electronic amplifier is an indispensable element of any music broadcasting system. They are used in clubs, theaters, in home audio systems and alarm systems. The amplifiers of appropriate power are selected depending on the size of the acoustic system and accordingly to the number of speakers. The mixing amplifiers, in addition to the basic functions, are equipped with an equalizer that adjusts the amplitude of the sound vibrations. These devices are compact and easy to operate; they are best suited for Public Address systems. The equipment of Belgian manufacturer APart is designed to create professional music broadcast systems. That is why it is of a high quality and reliability. The devices from this company pass many stages of testing before getting into the market. The equipment of APart Company answers all the requirements and provides high purity of the sound.