Sonic atributes ultralinear vs tetrode vs pentode


What are the sonic attributes of and amp running in Ultralinear vs tetrode vs Pentode. Looking to get a new amp, but live in a rural area can't audition them all. I don't like what I have heard from Ultralinear amps, too hard sounding for me. A lot of new pentode amps on the market, can't audition any. Why pick one over the other?
Thanks
Mike
brm1
>>12-18-11: Mcphersn
I'm enough of a boob to be ignorant of whatever has pulled your chain, but I don't think that you are making much of a contribution by making it unpleasant for Ralph to respond to this forum.<<

I think Ralph does a fine job promoting his ideas and products in the forums.

Trelja won't scare him away.

IMO
Trelja, choosing the midpoint on a scale may be simple math, but it's not simple dimensional analysis. Since wpc is a ratio scale with a meaningful zero, the proportions that Ralph referred to apply in this case. If this is confusing to you, you might ask someone who has had a beginning statistics course.

Audiofeil, thanks for the careful editing of my comment. You may want to take more credit for your creative work in the future.