Best match with Proac Response Series

I've heard them with Audio Research tube amps and could recommend that combo.

Thank you very much guys for your responses.
I finally bought the Audio Research Integreted CA 50.

THANKS AGAIN
Dominic Pare (Quebec)

Awesome Dominic! Have fun!

As you may gather from the foregoing, ProAcs will change depending on what you feed them. I have found them sweet with Pass Labs Aleph 3's, aggressive with ARC VT 100 II's, lite 'n' livley with C-J Premier 12A's, delicious and holographic with Blue Circle BC 2's. And with Cary 805's they are alleged to have gotten into some folks' pants. How do you like your eggs?

I heard Audio Research electronics an Tara cables with the 2.5s, and it was amazing. Forget the subwoofer, and keep it as simple as possible. I understand that the designer of Proac speakers voices them with Audio Research tube electronics, so I would imagine it is a good match, as my ears confirmed for me.