OK, so I've searched and haven't found the answer I'm looking for. I know there's a lot of info here on jazz pickups and unwanted noise, but I've found some conflicting opinions on my issue. I have a noisy Jazz bass, and I'm not sure if its 60 cycle hum or a grounding issue. Here's my setup: MIM Jazz V deluxe Lakland Hanson single coil pickups Audere JZ3d preamp I dont remember the noise being as bad with the stock preamp. I have already shielded the control and pickup cavities, but it might not be the best job. I ran out of copper tape and finished it in aluminum. The noise is loudest when I'm facing the amp. It disappears when i turn roughly 90 degrees from amp, then comes back when I face away from amp. There is no difference in the noise if I'm touching the strings or not. I know it's the bass because when I use another bass with the rest of my rig- no noise. So what the solution? Need better shielding? Hum canceling pickups? Grounding the pole pieces on the pickups? Is there a grounding issue somewhere? Preamp issue? Something else? Thanks TB!