Tubes are generally required for highly dimensional sound. I am surprised that has been mentioned mainly as an aside. I don't discount the value of good speakers I use JM Lab Focal Electra 936s in my main rig .
When I switched to tube power amps (later I added a great inexpensive tube pre) the sound became magical, halographic, layered, textured, airy, crystalline, very deep and wide. My audio buddies kept saying how good my speakers sounded now. What did I do to them they wondered? I said the speakers are exactly the same. The amps made the difference. And for the umpteenth time I will repeat you must use tube power amps to get this effect. I was given this advice from my old pal Trelja. He could'nt have been more correct.
When I switched to tube power amps (later I added a great inexpensive tube pre) the sound became magical, halographic, layered, textured, airy, crystalline, very deep and wide. My audio buddies kept saying how good my speakers sounded now. What did I do to them they wondered? I said the speakers are exactly the same. The amps made the difference. And for the umpteenth time I will repeat you must use tube power amps to get this effect. I was given this advice from my old pal Trelja. He could'nt have been more correct.