What factors do you need to pay attention to when purchasing high-quality professional amplifier?

Power amplifier (power amplifier), commonly known as "amplifier", is called the most basic equipment in the sound system. Its task is to amplify the weak signal from the signal source (the professional sound system is from the mixer) to drive the sound of the speaker.

The function of power amplifier is to amplify the weak signal from the sound source or the former amplifier, and promote the sound reproduction of the speaker. A good set of sound system power plays an important role.

Power amplifier is the largest family of all kinds of audio equipment. Its function is to amplify the weak signal input from the sound source and produce enough current to push the sound replay of the loudspeaker. Because of the power, impedance, distortion, dynamics, different use range and control and regulation function, different power amplifiers are different in the internal signal processing, line design and production technology.

Main points of power amplifier selection and purchase:

One is to see if the interface is complete

A AV power amplifier should have the most basic input and output interface, which should include the following: coaxial, optical fiber, RCA multichannel input interface, used for input digital or analog audio signals; horn output interface for audio output signal.

Two is to see whether the format of the surround sound is all ready

The popular surround sound formats are mainly DD and DTS, and the two above are 5.1 channels. Now these two formats have been developed to DD EX and DTS ES, all of which are 6.1 channels.

Three is to see if all the channel power is individually adjustable

Some cheap power amplifier is to divide the double channel into five channels, the channel should be large and small, and the true qualified AV amplifier can be adjusted individually.

The four is to see the weight of the power amplifier

Generally speaking, Baohua sound, in general, should choose the heavier machine, the reason is that the heavier equipment is the first power supply part, most of the weight of the power amplifier comes from the power and the chassis, the equipment is heavy, it means that the transformer is used in larger value, or the capacity of larger capacity is used, these are for the amplifier. It's the way to improve the quality. Second, the chassis is heavier, the material and weight of the chassis have a certain degree of influence on the sound. Some materials made of the chassis are helpful to the circuit in the chassis and the radio wave isolation from the outside walk. The weight of the chassis is higher or the structure is more stable. It can also avoid the vibration caused by the unnecessary vibration of the equipment. The three is the heavier power amplifier, which is usually rich and solid.

Power is the most important parameter in the sound system, which indicates the ability of the sound system to carry loads. This is the first thing we should pay attention to when buying. But if all manufacturers use different benchmarks to identify product performance, it is often difficult to make an objective comparison without sufficient knowledge.