Have you seen these??
The new LSA-20 Statements are on sale here now for $4500/pr and includes some nice speaker cables in the deal. They go down to 25Hz and will likely better your Souls in virtually every parameter. There’s a review on Part Time Audiophile that uses a Pass amp and a 20W tube amp and found the LSAs to be largely on par with his $25k reference speakers. Plus the seller/manufacturer offers a 30-day trial and free shipping, which is really nice. Best of luck in your search.
My weakest link, due to large room is my Emerald Physics KCIIs
But last night I decided to replace an $800 boutique power cord with a WireWorld Electra 7 MSRP $240 to my Core Power 1800 which plugs into a 20 amp dedicated line. This completes my Electra 7 cords powering my system
I am shocked what this one inexpensive change made across the board, especially noticed in the bass, which came alive