i just put in some new SeymourDuncan basslines Lightning Rods Active jazz pickups in my MIJ Fender Geddy Lee Jazz. have to say they sound GREAT! very very quiet, and very very smooth sounding, still with some bite. but i noticed that the output is not as hot as most other active basses. i noticed that the tech-guy used a cheap generic battery (new)... i'm wondering if this is not delivering the full 9 volts? or are these active Pups just not as Hot as other brands/models? any thoughts?