I recently bought myself a 2008 MIJ Fender Jaguar Bass. Was in absolute mint condition, but low and behold when i got it home and put it through the cab it was noisy as heck active, and not so bad when passive, but still very disappointing for an £800 bass. My other bass (Spector q4pro 18v EMG BTS hz) kicks its ass in the clean sound department. Decided to do something about the lack of shielding. So far i have shielded all inside cavities. The difference is unbelievable, other than replacing the pickups or preamp i cant see me getting it much better than it i just now, almost no noise with the preamp on, and silent on passive. Would highly recommend this upgrade for all fender active owners without shielding, it definitely works a treat!!! Not for the faint hearted though, thought id blown the preamp at one stage.