I know the Costa Mesa Tweeter carries them. It doesn't look like there's any up in LA though--there is one listed in Riverside, all the rest look to be south into San Diego county. From the Sonus Faber Site, all they point to is the US distributor, Sumiko, who wants you to email them for local dealers.
I listened to the bookshelf they carry (Concerto I think) & to me they were quite bright. IIRC, they were running off a mid-level Denon receiver & DVD changer.
Thanks, Chris. I actually found a place up here. Shelly's Stereo in Woodland Hills. They're the same outfit that carries the Paradigms.