Yeah, someone once yanked on my friend's 680 while it was plugged in and now the jack is messed up to where he can't jiggle the cable the littlest bit or it looses power so he has to tape the cable in position. I learned this the hard way when I went to get patch out of it and it shut off as I was trying to plug in some rca cables. Luckily it was a local band but I felt bad for doing it.