I heard the $4000 Focal Utopia Headphones yesterday

It’s the dust that’s toxic as all hell. Focal staff wear rubber gloves, airway protection, face shields, and medical gowns when they make the diaphragms. Once they’re in the tweeter they're fine. Just don’t go smashing it and snorting the dust.

Parts Connexion is having a significant sale on Stax headphones.

Pure Be is diff. than alloys. Pure Be is brittle as hell. Break it and the dust is toxic if inhaled.

I’m not a big headphone guy at all.  The hifi man, and audeze headphones have always sounded nice to me, but the Focal Elear and Utopia are just magical.  I’m so tempted to buy a pair of the Utopia’s...  never thought I’d say that, as even a $300 pair always seemed like a waste to me.

The Focal Utopias are worth it, as are other TOTL headphones.