So where should the tubes be?

I've been running tubes in my system for over 35 years now. Amp, preamp, phono stage, headphone amp and CD player. I always had tube friendly speakers and the music has been glorious- to my ears. But it's time for a change. Just this week I switched to a Luxman all in one integrated and CD player. I know it's going to take some time getting use to SS, but so far I'm impressed. Now I have a boatload of gear to unload, 2 boxes full of IC's and PC's as well as a tube collection. 

All tubes or just one tube, it's all good if matched properly. For very high power systems tubes get a bit pricey and generate a lot of heat. I use solid state for high powered systems. 

Class A ss amp. Tupe pre amp and phono amp. You could also add tube dac. That’s what works for me. 

Isolid state has evolved a lot ,fet, mosfets have several characteristics 
like tubes no more bright sounding ,thst being said a tube preamp is my favorite 
spot , too much tubes a bit too soft on leading edge . I prefer SS the dynamics control and current delivery have their advantages especially to control 
In Bass  drivers . I have used tubes for 40 years , I no longer feel tubes are necessary for detailed Rich , natural sounding music , but in the preamp section 
I feel the best position with a Solid State power amp .
my New Coda SCIB integrated with VH Audio Odam capacitors in the class A 
preamp section ,it sounds very natural sounding ,with the Bricasti dac-Streamer front end a very balanced sounding system.Everyone has their own  preferences .

Started with a Yamaha A-S501 solid state integrated amp. Good sound.
Put a Xiangsheng 728A tube preamp in front of it. It was a firm change from the good SS setup to a setup that had musicality, if that means anything.
Dropped both and went to a Quicksilver Audio Integrated tube amplifier. I cannot imagine more musical reproduction. I can imagine more of a you-are-there sound, more separation of instruments (as if I ever cared about that in a club or concert hall), but not more musicality. And then I'd need a new listening room and new speakers, too (Focal Aria 906's throughout the above).