if the sound engineer knows their stuff, it can sound very good. You,
however can be at their mercy at times. Another solution is to have
a sound hole mic or internal pickup which is fairly easy to aquire and install. then you will need a D.I. box when you play. I use a mini-
flex , which is actually a small microphone mounted on a goose-neck
device inside the guitar, so it only picks up the sound of the music,
not external distracting sounds such as pick and string noise. see:
musician's friend and look for guitar accessories-pick up-acoustic GHS A137 301012