Good news, I'm sure some of you know this already, But, If you have a bass with EMG's you can convert most of them to 18 volts.
I did on my Schector Elite 5 and I see that some of you with G&L Basses did the same.
It makes a big difference, more head room and a crisper sound. All that's really involved is adding a 9 volt inline (in series) with the existing 9 volt.
Like so:
Always refer to original manufactures diagrams before you do any modding!
Legal mumbo jumbo below READ!
I cannot be held responsible for any of you who try this and cause any damage to your equipment or yourselves. ALWAYS check with the manufactures sites first!!!!!