Doepfer

Hi all

Some of you may know I have Serge modular and also a 8 rack euro
modular that consists of bananafied Doepfer, Plan B, Livewire and Cat
Girl Synth modules..
As the euro modular has grown from being a Serge extension to its own
modular I need to look at getting some VCAs.
What I am not so sure about is that I will need to use the Quad ADSR
to go to a CV VCA but also need to have audio coming out ....I see
there is the A130 and A131 . 
Do I really need to buy both as it seems both can do both audio and CV
attenuation?????