Could you please define "warm" sound?
Certainly. I'll pretend you weren't smirking when you typed that.
"Warm"... The opposite of harsh and fatiguing. I think certain components or combinations of components lend themselves to certain sound characteristics. For instance, a good friend of mine used to have a really nice listening room. He was a big fan of Klipsch. He had Adcom sperates, monoblocks (I had and still have the 2x200 - GFAII 200 I think or something like that, I'd have to dig the amp out and look and we had the same Adcom 5 disc changer that I still use today in my new system.) I was always jealous of those big monster monoblocks and those giant speakers.
As much as I loved that room and that equipment, it was tough to listen for long periods. It just sound a bit technical and shrill... harsh. I imagine this was more the speakers than the amp, but I think both contribute.
I would go back to my place, at the time I had the Sunfire (which I just got), the Adcom player, and an Onkyo 90Pro going through a set of BP2000's when they first came out. I never felt fatigued or got tired or agitated listening to music for long periods of time. The sound was soothing... warm. I really really still like that Adcom amp, but I love that Sunfire and just don't imagine giving that up.
I mean, how do you describe the color blue to someone, or even explain verbally how to tie a shoe? There are some descriptions that just make sense to you that very hard to describe to someone else.