This is an easy one. I'd like to replace the MXR 10-band EQ in my pedal chain with the Kemper's Graphic EQ, except the center frequencies & Q's don't match. Another common standard would be the BOSS 7-band EQ. Most guitar pedal EQ's adhere to the layout of one or the other, making the Kemper Graphic EQ a bit of an oddball that doesn't translate well.
Since the MXR KFK 10-band is the one I use most, I put it on the bench and and measured it last night. A fair approximation would be: (Center Frequency / Filter type / Q)
31.3Hz Lo Shelf 14.5Q
60.0 Bell 2.0
130 Bell 1.0
250 Bell 1.0
500 Bell 1.0
1K Bell 1.2
2K Bell 1.2
4K Bell 1.4
8K Bell 1.4
16K Hi Shelf 12.0
The boost/cut is silkscreened to read +/- 12dB, but the max cuts in practice actually vary a bit, from +/- 9.3dB all the way to 14.7dB on my unit.
Seems like an easy thing to do - it would certainly simply things for people with already dialed-in setups!
-djh