Do you compress heavy guitars?

i use a vintage warmer on the guitar bus sometimes, its basically working as a limiter - dont really want any pumping, but it can help things get more upfront if they need it.

best answer is to try it and see if you like it, and whether or not they actually need it.

That PSP Vintage Warmer is sweet on guitars if you need to get them to punch through the mix, and the brick wall limiter is nice as well.

But I almost always use a Multiband Comp on the guitars. That way you can compress just the frequenices, especially the lower mids, that tend to "woof" the speakers during palm mutes
 
I've started limiting guitars with W1 (L1 clone), only taking a tiny bit off the peaks. It works well.

Joe