Seems to be almost as many opinions as listeners…
To name a few tweaks: I’ve rewired speakers to include adding banana jacks to one pair. I’ve replaced DIN jacks -> gold plated RCAs on a mid 80s Meridian. A little later upgraded the wiring for the same. The latest is tri-amping HT LR towers* bi-amping the Center channel - both originally passive.
*created a separate chamber for the mid driver.
NO regrets