That’s why I put “feature” in quotes it’s controversial and don’t want to relitigate it, but I’ve also heard stories of people getting random models without crackling at all. But little interesting tidbit, when my utopia left driver went out after the first 3 weeks (I bought open-box), I RMAed it back to Focal and when I got it back it crackles ALOT less now even in the right driver. Now I’d basically have to jack the bass EQ up really high to get it to do it so essentially I don’t get it at all anymore on even moderately high volume with a flattened/slightly elevated bass EQ when before it gave me a sour impression on the HP listening to deep bass music like Blade Runner 2049 on what I believed was not decibel piercing volume. So even if it was intended I think because so many people complained they might tweak it to shut you up if you ever service it (I had mentioned this issue in my email when I didn’t know about this quirk and got the whole lecture from their service dept. about not playing my music too loud and how dynamics are prioritized by focal yadayada….there is no way I listened too loud on my Sony Tazzy amp with its slightly underpowered capability but I digress…). Still a great headphone and no regrets, I just wished I could really make that bass growl like my HEKse or LCD-X because I feel the power is there if they ever wanted to unleash it even without planar tech. Hoping the radiance will soothe that inner bass-head side of me.