The A119 is actually especially made for external signal input amplification.
Next to that you can also derive an envelope following CV and you can
derive gate signals from incoming audio with this module.
I use it all the time. By this time I own 4 of them to get external fx
and samples into the system.

On Sat, Aug 15, 2009 at 8:29 PM, Sandy Brain< sandybrain@... > wrote:
>
>
> you could also use the A119
> http://www.doepfer.de/a119.htm
>
> as Monroe says, the VCA won't amplify your external signal
>
> On 15 Aug 2009, at 18:34, Greg Cerveny wrote:
>
>> Hey Sandy,
>>
>> I tried putting it through an a-131 to bring the level up, do you
>> think that would be enough
>>
>> Curiously, why would an a-120 and an a-106-5 would filter the source
>> untreated, but the a-121 need it amplified
>>
>> Thanks! I'm still new to this and trying to figure it all out.
>>
>> -Greg
>>
>> On Sat, Aug 15, 2009 at 11:01 AM, Sandy Brain< sandybrain@... >
>> wrote:
>> >
>> >
>> > are you using an external input module of some kind to bring the
>> > external input up to 'modular" levels
>> > if not, i'd say that's your problem.
>> >
>> > On 15 Aug 2009, at 17:32, Greg Cerveny wrote:
>> >
>> >> I'm really confused on this one.
>> >>
>> >> I have an a121 multimode filter that doesn't filter external
>> sources.
>> >> At first I thought the filter was not functioning at all. The
>> >> resonance will self oscillate and allow hints of what was coming in
>> >> from the external source. Then, I patched it in a conventional
>> synth
>> >> path.
>> >>
>> >> This works:
>> >>
>> >> When I patch it in vco -> a121 -> vca, it modifies the sound as
>> >> intended (hp/lp/bp/notch).
>> >>
>> >> These don't:
>> >>
>> >> When I patch in external source (drum machine/iphone) -> a121, I
>> >> barely get anything. The same if I patch ext source -> vca ->
>> a121 or
>> >> ext source -> vca -> a121 -> vca.
>> >> When I have more complex sources like vco -> vca -> bbd (188-2) ->
>> >> a121, the result is the same as the external source.
>> >>
>> >> Conclusion:
>> >>
>> >> It only seems to filter when I send in simple wave forms from a
>> vco.
>> >>
>> >> Notes:
>> >>
>> >> My other filters (a120/a106-5), allow me to patch in external
>> sources
>> >> (iphone/drummachine) and work as expected.
>> >>
>> >> Is there something unique about the a121 and complex wave forms
>> that
>> >> I'm missing Is my a121 toast
>> >>
>> >
>> > [Non-text portions of this message have been removed]
>> >
>> >
>>
>
> [Non-text portions of this message have been removed]
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>