So my battery ran out last night and I didn't have any others in the house. I decided to take it out and try to play the bass without a battery. It worked. It sounded kinda weak, but usable for practicing. My question is if you take the battery out, does it essentially make this bass passive? If so, is this what a P bass would sound like? Believe me, I'll be buying a bunch of 9 volts tonight, but I was just curious.