> Hi there --
>
> I know many people believe that it's an unnecessary distinction,
> but I am trying to remain completely analog in my modular. Can
> anyone explain (as I am having trouble getting my head around
> this) are the A-149-1 and A-149-2 completely analog in their
> function and construction, not just signal path
>
> It doesn't matter to many, but I find it a useful constraint.
>
> Thanks!

The A-149-1 has been designed after several suggestions and discussions in
this group in 2003. So you can find a detailed "history" of the A-149-1
design in older messages. Summary: the A-149-1 uses a DAC (digital-to-analog
converter) with microcontroller (whith a firmware that forms a shift
register) instead of the (digital) shift register with weighting resistors
of the original Buchla design. But finally the result is the same as digital
outputs (of the shift registers) combined with weighting resistors is
nothing but a simple DAC. But the usage of a precision DAC with a defined
reference voltage has only advantages from my point of view (e.g. exact
1/12V or semitone steps if desired). I cannot see any advantage of the
original shift register/weighting resistors design.

Best wishes
Dieter Doepfer