Thanks for all your help Scott! I have yet another question, having some trouble. I recently bought an adaptor to use my headphones with my Privia PX-150. With whatever pair of headphones I use, I seem to get sound only in the left headphone, and no sound from the right one. I've tried several pairs of headphones, and I made sure the adaptor and headphones were inserted firmly. Could it be because of the adaptor? Or maybe the keyboard itself?