I have driven my Perspectives with both tubes (VAC) and solid state (Sanders Magtech). While both have their strengths, on balance I prefer the Magtech. It is a superb combination.
Tubes or Solid State for Joseph Audio speakers
I own a pair of Joseph Audio RM-25Si's and have been using tubed pre and power amps. Have any Joseph owners found an outstanding combination of pre/power amp that has been accurate yet sufficiently warm, and serves the music well? I listen primarily to LP for enjoyment, secondarily to CD. I really enjoy the Joseph's and they are a pretty even load for amps to drive, and I plan on keeping them. I have tried contacting Joseph Audio for their input, but with no results so far. I need to keep the power amp under $1500, and will keep my tube preamp.