Feedback amplifiers are electronic circuits that enhance the performance of amplifiers by using a portion of the output signal to influence the input. This process, known as feedback, can improve stability, bandwidth, and linearity, making the amplifier more efficient and reliable. Feedback can be either positive, which increases gain, or negative, which reduces distortion and noise. In many applications, such as in audio systems and communication devices, feedback amplifiers are essential for achieving high-quality signal amplification. They are commonly found in operational amplifiers, which are versatile components used in various electronic devices, including computers, radios, and medical equipment.