The use of an expander in a playback system to restore peaks that may have been compressed during recording. The peak expander may also be used to widen the dynamic range of programs that were not compressed earlier.
"Your transfer and reproduction of my beat up vinyl 33 1/3 recording of a High School Concert 50 years old sounds better than when I played the record for the first time on my "High Fidelity" system in 1957. Your technology is amazing, as I hoped it would be. Thank you for your expertise and for all of your extra time in answering all of my ..."