Actual sound reinforcement occasions include many large halls, venues, outdoor open-air stages, etc., and the live environment and audience positions are different. This needs to be applied to the acoustic characteristics of Line Array​s of different shapes. Including straight line sound sources, arc sound sources, J-type sound sources, progressive sound sources, etc.

Class D (digital audio power) Professional Amplifiers are a kind of input analog audio signal or PCM digital information converted into PWM (pulse width modulation) or PDM (pulse density modulation) pulse signal, and then controlled by PWM or PDM pulse signal High-power switching device on/off audio power amplifiers, also known as switching amplifiers.

The line array​ speaker system has been widely developed and applied at home and abroad in recent years, and it appears in large-scale sports games and large-scale performances with its unique advantages. It can almost be said that no speaker manufacturing company does not produce line array speakers.

Professional Amplifiers are often used in broadcasting, output stages of communication transmitters, output stages of audio systems, and amplifiers for driving actuators in control systems. The application occasions are different, the performance requirements are different, and the circuit composition and work type are also different. Commonly used are linear power amplifiers, resonant power amplifiers, broadband power amplifier circuits, and so on. To increase the output power, power synthesis technology can be used.

The development basis of the line array speaker system is the development of theoretical research and the progress of manufacturing technology. The requirements for the sound reinforcement function and the promotion of the market are the driving force for the development of line array speakers.

Professional Amplifiers usually consist of 3 parts: preamplifier, driver amplifier, and final power amplifier.