#1
How do you guys record clean guitars ?

Do you double pan ? or center it ?

Do you apply compression ? What eq you use ?
The symphonizer
#2
Depends what the song requires/sounds good with and what else is going on. I always try and minimise how much compression I use in mixing. I believe it should only be used as a correctional tool until you get to the mastering stage. I always start by heavily dropping out all the unnecessary parts of the sound spectrum for whichever track I'm doing so for guitars I steeply roll off from 150hz downwards and from wherever's suitable depending on the style to the top end of the spectrum.
When altitude dropping, my ears started popping. One more red nightmare...