Hello Rob,

I've used the sequential switch to perform this function and it works
well. However, be aware: it is a hard switching function from one input
to the next as opposed to a "morph". To me a "morph" implies a more
gradual change over time from one state to another. In the synth world
this is often achieved (or simulated ) via a crossfading effect. You
can do this by running your audio sources into a couple of vcas and the
vcas into a mixer (then modulating the vcas eg: with envelopes that
start and finish at different times). Or, you could use the
panner/crossfader module (there's an existing one plus Doepfer have a
dual xfader on the list of modules in development). Or, there is also
the 4 channel voltage controlled mixer and morphing modules. These
options would achieve effects closer to the Plan B "VC waveform" (which
is actually a crossfade effect anyway).

Regards,
Adam

--- In Doepfer_a100@yahoogroups.com , "rob_d_rob_d" <rob@...> wrote:
>
> Hi everyone,
> Thanks for the replies.
> Seems like the A-151 is what I am looking for.
> I liked the morph feature on the Plan B Model 15 VCO but I am not so
keen on the tuning
> inconsistancies that exist on that unit.
> A-151 seems to do everything I need plus it can be minimised to 2 or
3 I/O's in addition to
> the default 4.
> Thanks again and now back to the digi stuff,
> Rob
>