Solid state amp that tube fan can be happy with?

The Atma-Sphere Class D amps are superb and maybe the best deal in Audio.

Ralph’s tube amps are also great but, for relatively little money, his Ds are as good if not better. I replaced also excellent AGD amps. The Atmas are better with much tighter, better bass. 

Wells Audio may be just what you're looking for.  

For me, it was my Musical Fidelity A1-2008 class A SS integrated (in HT mode) comparing with my Transcendent Sound T8-LN 25 wpc OTL amp.

The OTL wins in some ways, the Class A wins in other ways

I was pleasantly surprised (amazed?) at how great the Class A sounds in comparison to the OTL tube amp.

I don't like solid state but at the recent Capital Audio Fest I heard Mytek's newest flagship monoblocks, the Empire Ganfet, and it was seriously good. Most solid sate, regardless of price, set me off but these I would have in my home.

Sugden Masterclass IA-4.

33 wpc into 8 ohms.  Pure Class A.