Switching to solid state amp?

Ralph the amps are about 15 years old. These are George Wright Sugnature amps. Very nice when they work.

George (may he rest in peace) was pretty competent and there should be no reason to think that the amps can't be refurbished properly. If you really want them to work right over time, I would consider having the filter capacitors in the power supplies replaced. While they are not really so old now to be a problem, in five years they will be.

If these amps have made it 15 years already they really should be able to do that again if properly maintained, which really should only be about the tubes once the power supplies are sorted.

"Literally blown away" seems dangerous…one can only hope for a soft landing.

Bob, if you're a real tube guy (sounds like it): Class 'A' (lots of heat also) or Hypex nCORE-loaded Class D (Bel Canto, etc) for next to zero heat.

Else, well you'll be missing that 'something'... 

BUT conventional A-B SS like Constellation is getting pretty dang good nowadays!

SS will give the dynamics and grip unavailable to bottles.

All depends what you're aching for to make the change...  ELSE DON'T!

I moved away from tubes after about 15yrs. I was looking for an amp that would keep that midrange magic but have more grip, speed and headroom. I took a chance on an Italian brand called Audiozen that is brand new to the US through Mark Sossa at Well Pleased Audio Vida. I went from tube integrated to hybrid integrated and couldn't be happier. Audiozen also makes the Lysios dual monaural power amp which is currently being reviewed by Srajan of 6moons. Keep an eye out for Audiozen. Amazing stuff and great value.

My use of tubes are seasonal.  I use an Audio Research VT100 (tubed) in the winter when I'm paying for heat in the room anyways.  In the summer I switch to an Audio Research D400 SS amp.  I much prefer the tubes, AR does have a sort of "house Sound" that makes them similar,  on the upper panels of my Infinity IRS Gamma's, but my environmental self doesn't let me heat a room with 500 watts of electricity from the amp and then remove the heat from the room with 1000 watts of A/C.  It makes a good reason to looking forward to the cool weather and shorter days!