So, my house is always the worst place for 60 cycle hum. It's better on my Jazz if both pickups are equal, and better on my P/J if the P pickup is soloed, but horrific if otherwise. But the basses do sound great everywhere else no matter what the pickup configuration is, so I'm not about to replace every single coil pick-up with humbuckers... But I'm very close to doing it. I currently live in a rented house that was built roughly sixty years ago and I believe almost every wire in it is knob and tube so there aren't too many (if any) grounded wires anywhere except for at the main panel. But I found something out a couple of days ago. I always thought that the hum was so present because the amp is plugged into a plug that is not properly grounded, but I plugged in my battery powered headphone amp and played through that, not plugged into any of the houses wiring at all, and it still buzzes - though it is less, but it's hard to tell how much it is in comparison because the headphone amp definitely focuses more on the lows than the highs. I do have three fluorescent lightbulbs in my room and will replace those tomorrow with the older incandescent type. Is there a modern, energy-saving bulb that doesn't generate the same hum than the fluorescent style? When I do turn out the lights the hum gets noticeable reduced. Does anyone out there have any other suggestions? Thanks in advance, Matthew Also, sorry mods if this is in the wrong sub-forum.