> i haven't hacked the a112 yet, though i will, although i must confess
> i didn't really understand dieter's answer to my question, what are
> the advantages of ac coupling perhaps i should phrase the question
> thus: what are the disadvantages of hacking an a112 to record dc
>
> cheers, stu

In this case the A-112 output has a positive voltage offset (~ +2.5V), i.e.
if the A-112 is used for audio the voltage does no longer swing around 0V
(GND) as usual but around +2.5V. If you process this signal e.g. by a (DC
coupled) VCA like the new versions of A-130/A-131 or A-132-3 you will obtain
kind of a bump even without a present audio signal because the VCA processes
the +2.5V offset voltage. If you want to use the A-112 for both audio and CV
recording I'd recommend a switch for AC/DC coupling to avoid this drawback.

Best wishes
Dieter Doepfer