Reviving this thread from the dead...
Just had the opportunity to listen to the LS-28 pre and VT-80 amp powering Focal Sopra 3’s. No special cabling and the feed was Tidal from an iPad headphone out (seriously...).
Simply outstanding soundstage (breadth and depth) and incredible detail. I’ve heard systems (in dealer showrooms that were well set up) costing an order of magnitude more that would maybe eclipse this setup by a few percent. It was really, really good. Shockingly good for the price point. I can’t say how much was the AR gear and how much was the Focals, but I’m sold on the setup. I can't imagine what the system could do with better source material and a better DAC.
I strongly recommend a listen if you’re in the market for a new pre and/or amp.