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Integrated Amplifiers
If the electrical signals that sounds are converted into, coming from a CD player, a microphone, etc., did not go through an amplifier, but went directly to our speakers or speakers, the sound would be merely a whisper. Hence, we need an audio power amplifier, so that the signal is powerful and clear enough so that it can be reproduced in high quality by our speakers.
Integrated amplifiers incorporate the preamp and power amp stages in a single device. They are the most economical option, although their quality is generally somewhat lower than that of preamp and power amp sets.