Slew Rate, Does it Really Matter?
Slew rate is a measure of an amplifier’s ability to follow its input signal. The term is used to define the maximum rate of change of an amplifier’s output voltage with respect to its input voltage. The unit of measure is volts per microsecond. To put it in more technical terms, Slew Rate is nothing more than a term used to describe how quickly the potential on a circuit node must change with respect to time. As far as slew rate having an effect on perceived sound, the real issue is slew rate limiting, which relates to an amplifier’s ability to pass complex waveforms without clipping them, resulting in an open musical sound. Slew rate is measured by feeding an input signal that is too fast for the amplifier to cope with. So slew rate is an overload condition, and it should not happen at all for an audio amplifier. Therefore, being proud of a slew rate is very strange indeed In fact, the following is taken from a lab assignment at MIT and is the only reference to slew rate regarding the
