Shouldn't merchants be required to say that a bass requires a 9V battery before you purchase it?  I bought a bass awhile ago and much to my surprise, the sound quality kept getting worse and worse.  I thought it was just because it was a bass plugged into a guitar amp.  I was starting to wonder if I got ripped off.  Had I spent all that money just so the thing could f*&% up on me?  I knew just a little about bass guitars when I was buying.  I certainly didn't know they needed a battery to help power the electronics.  Today, I decided to open up the cover on the back to see if there was a wire loose or a dead mouse in there clogging up the works.  As soon as I took the plastic piece away from the back, there, staring up at me, was a bright green battery with Asian words all over it.  (Sorry, I don't know the difference between Asian languages.)  The tongue test revealed that it had no power left.  I would like to start a movement, I don't know if anyone's with me on this, that requires musical instrument sellers to tell you whether or not your potential purchase must have a battery to operate properly.  If anyone is with me, please sign up below.