Solid state amp that tube fan can be happy with?

Pass, Coda, Krell would be the top 3 SS amps I’d look at.  Accuphase and Luxman would be in the conversation as well but I think they lean a bit more toward outstanding SS amps with a dash of tube sound, qualities while the other top 3 blend the best of SS with the best of Tubeiness (tube magic).  Pass as another poster mentioned designs their amps specifically to behave much like a tube amp, they are the OG of SS amps that bring that tube magic.  Coda is way under the radar and was founded by Pass engineers, their Class A amps are a phenomenal choice, their # 16 amp, end game for what I think you are looking for.  Krell, their XD line sounds more tube like that any SS amp I’ve heard but still has the grunt to get down low and controls speakers unlike any other Amp I’ve tried.  I compared Krell XD amps and they’re integrated to other SS and Tube amps.  There was something special to my ears about the Krell XD amps, sweetness to the sound but while maintaining all the positives of SS but without the negatives.  I’ve never experienced some of the new class D designs but have read some of those can capture what I think Pass, Coda or Krell do.  If you picked Pass, Coda class A amps or Krell XD line of amps, think you’ll be very happy.  

I don't think I could totally remove my tube el34 amp from my system, but the Accuphase preamp and Class A amp that alternates in, gives me a pleasant option. It's a tough one, different, with excellent attributes, but both good in their own way.

Forgot to mention PS Audio, as another poster mentioned, their BHK line does a great job of blending tunes into both the BHK Pre Amp and their stereo and mono BHK amps.  I have the BHK Pre and their stereo design blends allowing the tube stage to bring a tube flavor but isolating some of the negatives tubes can bring to the table with a hybrid design.  Amazing how much fun tube rolling is in the BHK pre, you can hear the differences, influence of the different tubes.  Haven’t heard the BHK Amps but if they are built and designed like the Pre, sure they are winners and would have that blend of Tube qualities along with the foundation SS amps provide.  Good Luck! 

I've only owned one tube amplifier (PrimaLuna) so my tube amplifier experience is very limited.  I have generally settled though on SS amps I thought offered some of the tube like qualities I enjoyed.

The amps I've owned that I associate closest to my limited tube listening are:  Classe CA300, Modwright KWA 100SE, Pass XA30.8, AtmaSphere Class D Monos, and Coda S5.5.   Personally I think the AtmaSphere monos are the closest to the tube sound I remember (not counting the super black background and very tight bass they also provide... :)).

As a semi normal consumer (paranormal?) I can’t carefully listen to boatloads of amps but the two amps I rotate in my gear heap are a 12 or so watt per side Dennis Had tube "SEP," and a Pass XA-25 that actually sound somewhat similar. The Pass amp may not be powerful enough for your tastes but they make plenty of Class A amps that are. Try Uncle Ralph’s (Atmasphere) Class D amps and see if you agree with his utterly unbiased opinion.