External sounds contains any type of exterior influences, including external factors and electrical/electromagnetic interference. Interference is outlined as any unwelcome indicators arriving as either voltage or existing, at any of the amplifier’s terminals or induced in its involved circuitry. It might appear as spikes, techniques, sine waves, or random noise. https://low-noise-amplifier91111.aioblogs.com/89969047/low-noise-amplifier-things-to-know-before-you-buy