SS amp or receiver that sounds like Tube Amp

I can vouch for what @atmasphere said.

@jimbennet From you post where you warm up to the sound of a vintage low power Onkyo, you prefer vintage tube sound - warm, cozy, comfortable, thick, and laden with background noise - which is how the solid state Onkyo, and many other vintage solid state designs sound.  However, these vintage solid state products fall short in the reproducing the seductive midrange bloom and image dimensionality of vintage tubes.  I have a vintage rig in a vacation home so know and love the sound when there.  However, there is a difference between vintage tube sound and modern tube designs.  Modern tube designs have made notable improvements in reducing tube background noise, providing clarity and detail, while maintaining that seductive midrange bloom and dimensionality.  Compare a vintage AR design to their wonderful modern designs currently offered to understand my point.  So if you prefer vintage tube sound, stay with a vintage Class A amplifier to approximate the warmth you seek.  If you like modern tube sound, go with one of the following:

AR S100 or 200; Burmester; Humboldt; Griffin 

These will provide the sweet warmth, bloom (admittedly to a lesser but not significant degree) and dimensionality of tubes with the clarity, transient speed, and dynamics of solid state.  Be prepared for sticker shock so research while sitting.  

Another vote for checking out a Hybrid.  I have a hybrid preamp using 12au7’sand mono blocks using 6922’s so I can tube roll and get the sound I like.  Oh and MOSFET output transistors sound less SS and more tube like.

All the best.

"This post is going nowhere. I will just buy a vintage tube amp and rebuild it."

@jimbennet

What an oddly clueless thing to say. You’ve right from the get go are receiving terrific advice and options from a lot of experienced guys here. Perhaps reading comprehension isn’t your strong suit...

FirstWatt, from Nelson Pass, sells two current solid-state amplifiers based on static induction transistors: the stereo SIT-4 (10W into 8Ω, 5W into 4Ω; note reduced output into lower impedance) and the SIT-5 monoblocks (35W into 8Ω, 60W into 4Ω). Both are class A and dissipate a lot of heat, but provide an extraordinary tube-like sound. To quote Nelson, they're:

emulating the characteristic of a Triode, but operating at voltage and currents directly needed by loudspeakers, eliminating the output transformer. ... As with Triodes, the characteristic curves of the SIT allow operation on Class A “load lines" that can determine the relative values of second and third order harmonics and have little in the way of higher order distortion. It is a now a common observation that the most appealing sound tends to come from a dominant second order harmonic character followed by a lesser values of higher order harmonics.

You can read more about SITs here, and check out the glowing reviews like this one (SIT-4) and this one (SIT-5).