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Amplifiers do not inherently improve sound quality. Instead, they increase the power of a signal to drive speakers. If a speaker is underpowered, it may not be able to produce the full intended sound. In this case, adding an amplifier could help reveal more of the original sound quality. However, adding an amplifier to a sound system that already has adequate power may not make a noticeable difference in terms of sound quality. It is also important to ensure that the amplifier matches the capabilities of the speaker system to avoid potential damage.