Great speakers. I’d strongly consider a PrimaLuna Prologue Premium. It’s a tubed integrated that generates 35-40 Wpc (tube dependent) that should be enough, and I’d think its strengths would match extremely well with JA speakers -- much like your Plinius. There’s one for sale here now a little over your price but may be negotiable.
Solid state I’d look at a used Hegel H100 or stretch for a used H200. Best of luck.
Solid state I’d look at a used Hegel H100 or stretch for a used H200. Best of luck.