Amplifier task is to amplify the weak electrical signal from the signal source (from the mixer in the professional audio system) to drive the speaker to produce sound. It can also refer to other devices that perform power amplification.
The function of the power amplifier is to amplify the weak signal from the sound source or the pre-amplifier to promote the sound of the speaker. A good sound system power amplifier is indispensable.
The power amplifier is the largest family of various audio equipment. Its function is mainly to amplify the weaker signal input from the audio equipment and generate a large enough current to drive the speaker to reproduce the sound. Due to consideration of power, impedance, distortion, dynamics, and different use ranges and control and adjustment functions, different power amplifiers have different internal signal processing, circuit design and production processes.
The main performance indicators of the power amplifier include output power, frequency response, distortion, signal-to-noise ratio, output impedance, damping coefficient and so on.
Output power: The unit is W. Because the measurement methods of each manufacturer are different, there are some names with different names. For example, rated output power, maximum output power, music output power, peak music output power.
Music power: refers to the instantaneous maximum output power of the power amplifier to the music signal under the condition that the output distortion does not exceed the specified value.
Peak power: refers to the maximum music power that the power amplifier can output when the volume of the power amplifier is adjusted to the maximum under the condition of no distortion.