So the man knob controls not only amount of multiplication (-2.5x at
knob setting of -5 to +2.5x at knob setting of +5) but also
adds/subtracts an offset

-nicholas

Quoting hardware@... :

>> Can I use A-133 as a 2-quadrant multiplier without adding an offset to
>> the VC Obviously this is no problem for all + signals like most
>> envelopes, but how about for LFOs For example, to get a good vibrato,
>> I would have to run a sine into A138c and use the offset function to
>> get 0 amplitude at the maximum negative portion of the sine. Is there
>> any other module that does offsets like this
>>
>> -nicholas
>
> The A-133 has a manual offset control. If you e.g. turn this control to ~ +3
> you can add an LFO signal with adjustable level to the CV input.
>
> In general nearly all A-100 modules have an offset control for each voltage
> controlled parameter. There are only a few exceptions like the low-cost dual
> VCA A-132-1 or the dual crossfader A-134-2 with small 4 HP front panels
> (only sockets, no controls).
>
> Best wishes
> Dieter Doepfer
>
>