Lush and Romantic Tube Amps

Leben CS600. It's an integrated so you can sell the LTA. Very Romantic but really sounds right.

A nicely restored pair of Dynaco MkIII's. I have 'em!

One of the early Conrad Johnson Premier amplifiers, like the Premier 3, would be a good fit (I know you tried the ART, this is much different).  Or a pair of older Jadis JA 80s using KT88 or EL34 tubes.

      The use of NOS British* tubes for input and driver/splitter positions, warmed things up considerably, for every customer that asked, back in the day.

       Amp's manufacturer didn't matter.

       Nor: whether octal or nine pin miniature tubes.

       The carbon composition resistors, used widely in older tube amps, gave them a warmer signature.    Even SS gear could be warmed up, by swapping those in for cleaner resistors.

                               *ie: Mullard, Genelex or Brimar

        Brent Jessee's site has a wealth of information, as regards the presentation of the valves available in the NOS market.

                                   http://audiotubes.com/

         You could warm up your existing system's presentation, by installing British valves in your LTA preamp, whatever your current amp.

The Decware ZMA with it's huge power supply would be a good choice for those speakers.  Closest you can get in a push-pull to the SET sound.

JErry