Korg Poly800/EX800 Users

Try something even better then just a mere switch: add a knob.
I was expecting that a panpot between 12db and 24db would allow wierd
values like 18db, but instead a bit of phase cancellation kicks in
and the sound becomes muffled, almost. Add a bit of flanger and it
sounds softer and warmer then a night's sleep on a feather pillow.
If your making music that needs harsh noises, you can still turn the 
knob hard to either direction and hear 'pure' 12 or 24db, without
the muffling.

If anyone is intrested, I can post a sound byte...