Active 7 band equilizer

[Apokas]

Where can I find a schematic for an active 7 band equilizer that will boost or remove the selected frequencies ?

[RDV]

There's one in here:
http://www.geofex.com/Article_Folders/EQs/paramet.htm

And here:
http://www.geocities.com/j4_student/bossge7.pdf

R.G.'s would probably be easier.

RDV

[Apokas]

Does anyone have an idea for an aproximation of the Boss GE-7 equilizer`s battery life?