I may be overly cautious with my headphones, but I hear a faint little snap when I turn it off, and its cleaner when I put the cables in drawers.
I didnt hear any balance issues with headphones so I re-soldered the speaker post without it making any difference. Then I saw how the headphone jack worked when headphones where plugged in, I tried to tighten the connectors and cleaned it up and that leveled out the balance on the speakers, for a while.