#1
My snark broke today, and since i primarily play electric regardless of being plugged in or not i am planing on just going ahead and getting the boss tu-3, can you use that with an acoustic? My Alvarez plugs in so i should be able to but I'm not sure.
ESP LTD EC-1000 vintage black
sunburst fender MIM tele
Epiphone LP standard ebony
Mesa/boogie dual rectifier
Mesa/Boogie .50 caliber plus head
Marshall JCM900 Hi-gain MII 2500
Fender Hot rod Deluxe
#3
Only if your acoustic guitar has a build-in mic they will work.

EDIT:
And I assume it does.