Wow. Quick first responses! But before this gets too far in, I better qualify that I didn't mean that I'm new to EE or Physics or high-end audio listening. However, I am new to tubes as they're used in audio equipment. So my question is only partially about the physics/engineering behind tube implementation in audio. I realize that theory and circuitry may very well be part of any good explanation, so I don't want to discourage it. But the main question is about what tube enthusiasts like to hear and how they achieve that sound at their preferred listening levels.
I think Atmasphere understands where I'm coming from. In fact he/she may have answered part of my question, but I'd like to hear other viewpoints.
Mapman, I'm sure you have some good insight now that (hopefully) I've explained a bit better. I'm sure you know more about the subject than me and I look forward to more input from you. However my question is more subjective than came across. How does a tube enthusiast choose the right power for their system given that they actually may prefer more distortion of the right harmonics? If they choose a higher power amp I'm assuming (and yes I might be wrong!) that there will be less of the DESIRED distortion that adds to the fun of tubes.
Czarivey, I appreciate the input but you misunderstood the point that not all watts are created equal. They most certainly are not, or we'd all have $200 Bose equipment and stop there.