Preamplifier

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A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.^[1] Without this, the final signal would be noisy or distorted. They are typically used to amplify signals from analog sensors such as microphones and pickups.^[2] Because of this, the preamplifier is often placed close to the sensor to reduce the effects of noise and interference.