I’m using a pair of Denafrips Thallo amps in vertical passive bi-amp mode with my 2024 Salon2s and they work very well. They have plenty of headroom for me but I only listen at about 85dB.
I was previously using a Krell KSA 300s and although more powerful, I don’t notice any drop off in performance.
The Salon2s with the matching Rhythm2 sub produce exceptionally smooth bass in my room.