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In this section we'll be exploring the concept of amplification and its many features. The basic idea is that we can boost the amplitude and power of the signal to achieve our desired aims. However, it is important to understand that not all signals can be amplified in the same way, and above all, that quantities and configurations may differ. If we analyse the route a signal takes, from the source (i.e a microphone) to its final destination (i.e a loudspeaker) we will understand the fundamental differences between each situation.