At present, there are many kinds of stage audio equipment and different functions in the market, which brings some difficulties to the choice of audio equipment. In fact, in general, the professional stage audio equipment is from the microphone + predicate platform + power amplifier + speaker can. In addition to the simple words, sometimes you also need DVD, computer music and so on, but also can only use the computer. But if you want the professional stage sound effect, in addition to the professional stage construction staff, but also add effector, timing equalizer, voltage limiter and other equipment.

Next, I would like to introduce you to the professional stage audio equipment.
1.The mixer has multiple channel inputs, the sound of each channel can be processed separately, and has a kind of sound mixing equipment with left and right channels, mixing, listening and so on. It is an important equipment for phonologists, audio recorders and composers to create music and sound.
2. Power amplifier: the device that converts the audio voltage signal into the fixed power signal to drive the loudspeaker to make sound. The matching condition of power amplifier power is that the output impedance of power amplifier is equal to the load impedance of loudspeaker, and the output power of power absorption amplifier matches the nominal power of loudspeaker.

3. Reverberator : in the music and dance hall sound system and large stage lighting singing venue, a very important part is the reverberation of human voice. After reverberation, people can produce a kind of aesthetic feeling of electronic sound, so that the song has a unique flavor. It can hide some of the defects in the noise of some amateur singers, such as hoarse, throat and sharp vocal cord noise, so that the sound is not so bad. In addition, reverberation can also make up for the phenomenon that amateur singers are not rich in overtone structure because of their lack of special vocal training. This is very important to the effect of the stage lighting concert.
4. The circuit or device in which the frequency divider realizes frequency division is called frequency divider. There are many kinds of frequency divider, according to the waveform of its frequency division signal, there are two kinds of sinusoidal frequency division and pulse god frequency division. Its basic function is that according to the requirements of the combined speaker, the full-band audio signal is divided into different frequency bands, so that the loudspeaker unit can get the excitation signal of the appropriate frequency band and work in the best state.
5. Changer: because of the different noise conditions of people, the tone requirements of accompaniment music are different when singing. Some people want to be lower, others need to be higher. In this way, the tone of the accompaniment music should be adapted to the requirements of the singer, otherwise you will feel that the song and accompaniment are very discordant. If you use an accompaniment tape, you need to use a conditioner for tone variation.
6. Pressure limiter: it is a general term for the combination of compressor and limiter. Its main role is to protect power amplifiers and loudspeakers (speakers) and to create special sound effects.
7. The effector: provides sound field effects, including reverberation, delay, echo and sound equipment for special processing of sound.
8. Equalizer: is a device that elevates and decays different frequencies and adjusts the proportion of bass, mid-frequency and treble.
9. Speaker: a speaker is a device that converts electrical signals into acoustic signals. According to the principle, there are electric type, electromagnetic type, piezoelectric ceramic static type and pneumatic type.
10. Microphone: microphone is a kind of electroacoustic energy exchange device which converts sound into electrical signal. It is the unit with the most kinds in the sound system. According to its directivity, it can be divided into non-directivity (circular external directivity (heart type, supercentral type) and strong directivity, in which the non-directivity is specially used for the band to pick up the sound; directivity is used for sound, song and other sound sources. Strong directivity is to exclude the sound on the left and right sides and behind from the microphone picking space in order to pick up the sound source sound in a certain direction, and a slender tubular microphone made of acoustic interference tube is made by using the principle of mutual interference of acoustic waves, which is called microphone, which is used in art stage and news interview, and distinguishes moving loop microphone, aluminum belt microphone and capacitive microphone according to structure and scope of application. Pressure zone microphone-PZM, electret microphone, MS stereo microphone, reverberation microphone, switch microphone and so on.