Onedisadvantageofthismethod of stabilizationis the additionaloutputnoiseandoffsetvoltage caused by increased amplification of input-referred voltage noise and input offset voltage.
Substations and transformer boxes eventually reduce the power to the 110 volts that toast your muffin in the morning, but the electrical noise on a high-voltage line can destroy data signals immediately.
With Internet-delivered music, Dolby's noise-reduction matters more now than in 1965, when Dolby first observed that the voltage of hiss in audiotape outmatched the music by a factor of 1, 000 to 1.