FWIW, I recently replaced my longtime solid state McIntosh preamplifier with a tube unit. For me, the change was epic. Please don't attack this statement as it is no reflection on McIntosh. I think everyone has an ideal image of what sound they want, and for me, the tube preamp makes it.
Is upgrading pre worth it?
I Own a Denon 7.2 receiver. I am using it for a pre. I have an st100 Rogue amp. What difference would a nice pre make? for 1500 used Rogue pre would I get 1.5k worth of sound.