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If you want to explore a natural sound performance while watching movies and hearing music, then you can explore more with these amplifiers. The device input will allow you to connect different types audio devices. The storage media can also be connected with this type of amplifiers. The most powerful systems also include image processors that can process and view video input signals on HD devices. They are a part of the home theatre systems.
How to Choose a Good Amplifier?
If you enjoy a very good music reproduction, then the simple sound line magnet amplifier is the right choice for you. A low TV sound may also perform quite well to meet your needs. The normal amplifier will suit you if you are not looking for a home theatre version. The line magnetic amplifiers are very easy to install. For regular moviegoers and people, who watch through DVD and Blu-Ray, need a home theatre system that requires an AV receiver.
An amplifier can produce only one form of distortion one at a time. Before purchasing, one should test the audio amplifier's level of total harmonic distortion and intermodulation distortion. Then you must concentrate on the output power of the amplifier which indicates the amount of power supplied to the output devices without causing any damage. You should always check the marked nominal power which is continually supplied to avoid any damage to the system. The relationship between signal input and output rate is referred as the frequency response. You should always test the frequency response and make sure that it is between the bandwidth of 20 and 20000 Hz in order to meet a great output range.
The other important feature is the amplifier's sensitivity, which determines the minimum level of input signal to be produced for the maximum level of the signal output. The level sensitivity should not be either very high or very low since it can cause any damage in the system. It should always maintain the low value to be higher than the output of the amplifier. Power resistance is very important to get the voltage difference between the amplifier and the source of the sound. The difference of the power resistance could be obtained for different audio input sources. Amplifiers will have both output and input resistance. So high input resistance should be preferred to achieve the correct voltage supply. Also, you should check the gain of the amplifier which is a signal source power between the input and output power of the amplifier. Apart from all these, you should also check the noise signal of the amplifiers which enables a good output.
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Source by Arthur Huang
