I will preface this by saying I have listened to those speakers and they are not my favorite. Focals are going to be a bit bright relative to other speakers (not a bad thing, so are some of the ones I make) and the right thing to do is pair with a warmer amp...which you have done via the Primaluna. That amp should leave them relatively neutral sounding. I am surprised you are still having an issue with brightness after moving away from Parasound.
In terms of sound, I like a slightly forward sound that is very detailed without crossing over to shrill. Means there is amazing sparkle in piano but horns and strings don't sound more metallic and shrill than they should. It is a fine line.
How well damped is your room? Increasing damping would be the place I would look to make a change and that may resolve the issue you are having. Otherwise, you would need to look for a warmer speaker or a warmer amplifier.
I have not heard the Tektons and can't speak about their sound profile and whether it will be an improvement for your specific issue.
In terms of sound, I like a slightly forward sound that is very detailed without crossing over to shrill. Means there is amazing sparkle in piano but horns and strings don't sound more metallic and shrill than they should. It is a fine line.
How well damped is your room? Increasing damping would be the place I would look to make a change and that may resolve the issue you are having. Otherwise, you would need to look for a warmer speaker or a warmer amplifier.
I have not heard the Tektons and can't speak about their sound profile and whether it will be an improvement for your specific issue.