Aaaaaaand that's why I asked. Good to know. So if I want to record our tones, the easiest way is the built in amp DI/Line Out? Each amp used in my band has one, and they all drive our PA fine, so I assume they'd drive an interface, right? Only my bass amp has the pre/post options, so I'll dig up manuals on the others and see what they say about their line outs. Hopefully, they're post EQ. Thanks again.
Edit/Update: The guitar rigs don't say post EQ, but they say they're designed to sound like a miked cab, so I would think they're post EQ. Great! My bass rig does not specifically say it is supposed to sound like a miked cab, but it does say post EQ. Weird.