i use this:

http://www.analoguesystems.co.uk/modules/rs150.htm

driven by an lfo. it's quite good fun to have sudden dramatic timbre
changes, i use it to cycle between eg filters lp/bp/hp or ring
mod/reverb/straight, can drive it really fast too.

i'm sure there's a doepfer equivalent. if not then for god's sake
don't distract dieter from the digital modules, i demand a bit crusher
and i demand it NOW.

--- In Doepfer_a100@yahoogroups.com , "rob_d_rob_d" <rob@...> wrote:
>
> Hi everyone,
> I would like to be able to switch between the waveform outputs on my
A-110 based upon a
> clock signal.
> Does anyone have a simple solution as to how this can be achieved
>
> thanks,
> Rob
>