Hi Bakis, Joost,

> i think that your problems are due to the AC coupling
> of the a135 cv-mixer.the a135(am i right,dieter )is
> only from audio mixing ,not for DC signals.but i'm not
> totaly sure about this.

This is almost certainly the problem. The manual repeatedly mentions
the 'audio' bit, and says the A-135 uses CEM3381 chips: these have a
strange internal reference voltage of -2V, which I think basically
rules them out for DC use, hence in the A-135 there will be
capacitors which block DC from passing through.

The A-132 is certainly happy to pass DC, and I assume that the newer
type of A-130 (using the CA3080) should be too.

Tim