I think my system sounds better with the ferrite in place. I'm not hearing much, if any roll off of the highs, but the bass is tighter, and image is more stable. I ended up using the maximum amount of ferrite on each clarifier. Unfortunately, It's not easy to do blind a/b testing with this...which is what I consider to be the gold standard for testing tweaks. But if my ears are right, I'm hearing some important improvement.