I had an experience in the late seventies of a similar nature. I went to a local shop that was demoing a new ADS digital delay system. Honestly, it absolutely blew me away. The collapse of the sound field was so startling when it was turned off. That was a thing I lusted after and could never really afford.
Now days, many audiophiles consider such tampering with "purity" with disdain. i thought it was the best thing since sliced bread at the time. Now, such systems, especially in home theater and room correction or cheap and plentiful. Ironically, I no longer have the burning desire to have it,