> The AD/DA converter is on my wich list. It looks to me like a realy
> cool module.
>
> But can't the Hz/V to V/Oct be done with something like a lin to log
> transformer or lin to exp transformer

Yes, but such a circuit would require the same costly matched transistor
pair with temperature compensation/regulation as used in VCOs but with the
opposite function. We do not plan such a module as it is not required within
the A-100 and I do not expect reasonable quantities for such a module.

Best wishes
Dieter Doepfer