Search-mongers feel free to crush me now... I have been playing active basses for almost 20 years now and I have a stupid question that is bothering me as of late: ....How much, if any does the output signal and/or frequency boost decrease as battery power decreases? If it is a matter of simple voltage does it either work or not work? ...I imagine the type of electronics have something to do with this answer. The only bass I have EVER had absolute battery failure with was equiped with a strait set of active EMG's @18V, other than that I have always just replaced batteries every six months or so and have not really noticed any changes in output. I was also given a pair of battery "jumpers" from my tech, it's a 9Volt battery plug with the + & - wires soldered together so I can run with one or no batteries if need be without breaking output chain as my pups will run in passive mode if needed or desired. .....any educated thoughts on this?