Just after Woodstock I was at another massive rock concert in the Poconos. They had these gigantic horn speakers and I recall seeing some guy he must have been tripping his patoot off standing in front of if not just inside the speaker as Grand Funk Railroad was blasting out a set and that dude was "shaking all over".
Hearing loss is quite common roughly 15% of the population over age 20.
Quick Statistics About Hearing | NIDCD (nih.gov)
So it would seem to me before spending big Denero on upgrading your system shouldn’t you get a hearing test first? If you have a loss in a specific frequency or across the board of your frequency range how might that effect your decision making relative to upgrading your sound? Here is an interesting article. You experienced folks might already be Intune with this information.
Hearing Loss, Music, and Brain Health - Hear Better Through Music (hearingtracker.com)