I was having issues with my gear sounding a bit too bright. I tried everything I could think of to warm things up. Results were unsuccessful, until now.
I placed a tube buffer (Audio Horizons TB 5.1cv with Siemens tubes) between my SS amp and preamp.
What a positive improvement in sound this addition has made. It has really softened my mid range and upper end without (to my ears) sacrificing clarity. Just warmer, more pleasant sound.
Now I understand all the posts I have read concerning the positive attributes of tube gear. I am very happy I have made this initial leap. I just hope I haven't discovered yet another avenue in this hobby that will contribute to the emptying of my wallet.