Audio Research and Wilson Sabrina

I think you will be very happy with the ARC Ref 75. These are beloved amps for a reason and tube amps so they have much more power than a solid state. I have a friend with Wilson Puppies and the ARC Vti 80. While the Sabrina is a less efficient speaker... unless you blast rock and roll... then the REF 75 will provide plenty of power. Maybe someday you will have the funds to upgrade. I would definitely go for the speakers... assuming you like Wilson.. .I am an ARC / Sonus faber person. You can also wait and enjoy an upgraded amp later. I'm sure you will be happy in the mean time.  

For many years, if not still, Audio Research always demoed, and also tested when voicing, their products using Wilson speakers, so that should be a great fit.

I have a pair of ARC Ref 250SE monoblocks for sale, if you want to up your ARC game a bit.

There is a review of Sabrinas where a reviewer is using several amps for evaluation, one of them is 75SE. Read it. 
I was considering trying 75SE but was worried it wouldn’t be enough. The Sabrinas are not easy on amps due to a dip into 2ohms. I found more current is always better with these speakers. I used Pass XA30.8, Simaudio 330a, Pass X260.8 mono amps, Coda CSIB V1, and now using Boulder 866. Based on my experience high quality high power amps have better control of Sabrina woofers balancing the overall presentation more towards smoother and more dynamic delivery.
Pretty sure going up ARC line will result in better performance.

I ran that exact set up with REF75SE and LS28SE- totally rocked and a great pairing, never any issue wanting more power or bass- that amp kicks ass and I went on to run Sasha 2 with it for quite a while !

Wow, thank you guys for the feedback and taking the time to comment.  Dave as always i definitely trust your opinion especially since you’ve heard my system. I remember you mentioning now that the amp had no problems or sounded constricted in louder passages.  Suppose more headroom is nice however I don’t listen extremely loud and my room is medium sized. Maybe now I’ll add a 2nd subwoofer 😁  And by the way Dave your system I feel the same.  Don't change a thing.