> (sorry, hit return too early)
>
> i'm a big van of these smaller utility modules - the only thing i
> like more than reducing costs is reducing width! and for patches
> with four voice polyphony, these modules really are a godsend,
> and my drum patch rack will also benefit from the upcoming quad
> modules (although i think the quad decay envelope would have been
> better as a slew limiter, allowing dynamic control as well).
>
> so i'll be ordering several quad vca's as it is, but i'd also be
> interested in a couple of linear versions too.

Unfortunately all currently available high quality VCA circuits (THAT,
SSM2164 and similar) have an exponential control scale. We still have linear
VCAs with good quality in stock (e.g. CEM3381) but as they are no longer in
production we do not want to start a development with obsolete circuits.
Converting an exponential VCA into a linear one is not that easy because a
exp/lin converter is required. One could use another of the same VCAs to
obtain this function but this would require 2 VCA circuits (one for the VCA,
one for the exp/lin converter) to obtain one VCA. Of course OTAs (CA3080,
LM13700) could be used - as used in some of the existing VCA modules (A-130,
A-131, A-132-1) but the audio quality is not as good as for the THAT/SSM
circuits. We want to use only these high end VCAs in all new designs.

Best wishes
Dieter Doepfer