Some speakers don’t perform well with high power amplifiers, though I wouldn’t expect that to be the case with Elysians.
Sometimes when I think something is amiss with my system or that it doesn’t sound good, I later realize I was just having an off day or in a bad mood.
Also, some of the older Parasound products actually perform better in bench tests than the new stuff. For example, the original A21 is quieter than the JC5. That’s probably not your issue but a possibility. I know I prefer the sound of my 20-year-old, beat-up A21 to the A21Plus.