@rvpiano I haven’t experienced what you’re describing with volume variance being this dramatic. I agree with @lalitk as to the reasons why - it is the recording. However there are many other factors that can contribute to this such as DAC, preamp and amp, where the components cannot reproduce the dynamic range of the recording correctly and you end up with higher than necessary volume settings on a quiet passages and get your eardrums pierced when the DR is in the norm for the electronics
May be you can post the album and track you were listening to when this happened?