The PS Audio would probably be better than the other two. I can think of a few other options that would do a good to incredible job depending on budget.
- the Naim NAP 300 DR. Naim and Focal go together like peanut butter and jelly. Focal speakers are voiced using Naim amps. The NAP 200DR or 250 DR will do the job but the 300 is best with external power supply.
- the Bricasti M15 would be brilliant. Bricasti amps just are exceptional
- AVM SA 6.3 is incredible. Very refined with a warm, smooth yet detailed presentation. The MA30.3s will do the job well at a lower price but won't be quite as refined.
- Hegel H20 is warm and refined. I find the sound somewhat analytic yet not cold. it is a very unique presentation that would do a really nice job with those Focals
I am a Focal dealer and a dealer of all of these amps. All are pure SS without tube input stages. None require a fully balanced connection to get great performance so they will work with you preamp. They range from $5300 up to about $13.5K so in the same range as to what you are looking at.
if you want an integrated, Hegel and AVM have excellent options.