External sound contains any type of exterior influences, including exterior parts and electrical/electromagnetic interference. Interference is outlined as any unwelcome alerts arriving as either voltage or present-day, at any of your amplifier’s terminals or induced in its linked circuitry. It could surface as spikes, methods, sine waves, or random noise. https://israelswaeg.full-design.com/low-noise-amplifier-no-further-a-mystery-79597084