Microphone amplifier and power amplifier (PA) as you.

Many friends often new to audio amplifiers and power amplifiers do not know the microphone, many users often ask questions such as: "the microphone amplifier and power amplifier the same?", "A voice can be processed into the computer?" And the same problem. .Microphone amplifier and power amplifier first answer is not the same, then we explain the microphone amplifier and power amplifier. .What is the power amplifier (PA) power amplifier, the general level we all understand the power amplifier for the post; and audio amplifiers, we are generally understood as the front stage power amplifier, but civil, and often called them the combination of the two amplifiers. .Typically most of the power amplifier device: after the main current amplification stage power amplifier, which output a constant voltage, then the volatility of the current campaign to promote the speaker produces sound. .The former mainly for voltage amplification stage power amplifier, by contrast to enhance the voltage, making all kinds of sound change, then zoom in, gave after the amp, because the weak audio signal without a preamplifier, power amplifier to drive multiple almost impossible .even one is immune, or the sound worse. .What is the preamp (the microphone amplifier) the meaning of "put words"? ."Then put" is the microphone amplifier is to amplify the microphone input signal equipment. .Generally in the professional microphone or a wireless microphone on this thing only, professional, such as some static microphone or other microphone, in order to get high sensitivity and extremely wide range of audio, using a special circuit to enlarge him, and then through the line out .to specialized equipment, usually a digital signal and the acquisition of specialized equipment is also a grabber, a computer acquisition. .However, many also with common interface, can be connected after the pre amp or power amp and mixer and other equipment. .Wireless is the wireless signal amplification is mainly converted into audio signals only. .In mixer, sound card, or Kara OK machine, these devices have one (or more), then release. .Another is to work independently, then put, it is only responsible for the microphone signal amplification and some necessary processing, and then a line output signal and then output out. .Work independently, then put this in general is a more comprehensive and professional, speaking here today is that independent, put, and carried by digital mixer preamp. .This independent, then put usually with the following features: 1, the pressure limit; 2, EQ; 3, flapping noise canceller; 4, hiss elimination; 5, the noise gate. .Adjust the pressure limit of which one of the most important principle is: the purpose of using the pressure limit is not just the sound of the dynamic compression, it has the expressive power and fullness, and more can not be ignored is that the use of pressure limit .not allow the audience to listen to a "trace." .In other words, a song or a musical instrument, if you record voices from beyond to make people feel after a process is compressed, then, is that you use the pressure limit of the failure. .As for the hiss elimination, then put most of the relatively simple, just set the threshold and the amount you can eliminate, eliminate hiss sound is not the key is to make the deal and become cloudy because of it. .If the microphone amplifier output audio interface (that is, the kind of round lotus socket), then you can connect the computer, but before connecting the best of "microphone amplifier" the device microphone sensitivity to minimum, the output volume to the minimum, avoid some of the equipment .the output of the non-audio signals, but with the audio jack, while the actual output current signal and the damage to some computer audio capture module..