Tube vs solid state (with all apologies)

the Martin Logan choice wasn’t arbitrary. I’ve known one of the founders for many years having lived in Lawrence, Kansas most of my adult life. I had the chance to do a service swap, but at the time needed to pay bills, feed kids, etc. I’ve been listening to them however for the better part of thirty years. My bias… I own that. 
I’ll check out the book! 

In guitars vacuum tube amp,in Audio personally 
Solid state has much similarities , Mosfets , Jfets, bipolar transistors come pretty close in sonics in a good quality solid state amps ,and more current ,control for drivers 
and sounds very good , if you want a bit of bloom or perhaps a bit bigger soundstage a vacuum tube preamp. To add to it. 
I have owned many tube amps ,and just tired of tubes to replace ,or blowout unexpected and taking out a channel ,
if you don’t mind then enjoy ,myself as I get older over 60
i want things a bit easier .

Good manufacturers can and do get the most out of either, tube or s.s. amplifiers. The signatures of each are much closer to each other than they have ever been. A bigger consideration is heat, both in the room and on your rack.

Yes, manufacturers of ss and tube have been converging on more accurate sound for decades. Both have improved significantly decade after decade;  You could generalize that solid state tends to provide greater detail and tube tends to provide a more musical experience at any investment level. The greater the investment the better the sound.

That said, over the last 50 years as I upgraded and made my personal assault at the highest end system of greatest sound quality, one by one each piece of equipment has ended up being tubed. By far my current system is the best and most satisfying… all tubed, except the streamer (which is battery powered).

Buy what you like and do it your way. Period you have to live with it.

One mans food is another mans poison.
Enjoy the journey, as it never really ends.