Hi jonathan

> I think I will replace my 121 with the 106-6 (loads of uses, Love some

of the demos,

> has an "alien" sound to it in some of them)

> my 120 with the 108 (Daft Punk filter! In some of the demos it sounds close to my
> old Mutator).

> Can anyone recommend a classy "vintage" sounding filter, a little less extreme than
> the 108, somthing creamy and nice 105, 106-5, 122

If you want to replace filter modules, then I'd recommend:
* A105 as replacement for the A120 (the A105 is technically extremely
close to the Mutator!). This is for the thick fat basses, great singing
resonances. If you want the Kraftwerk Zongggg-Bassdrum, then use this one.
* A106-5 as replacement for the A121 which should provide the classy,
less extreme vintage sound. (In fact the A121 circuit is very similar to
the OB-Xa 12dB Filter, where the A106 is the Oberheim SEM 12dB Filter).
* A106-1 or A102 for the crude dirty stuff. Maybe also A101-1.

Please keep in mind: replacing the A121 by the A106-6 does not make much
sense. Though you have different slopes, the basic sound is identical.
both use basically the same filter chip (A121 uses the CEM3320, where
A106-6 uses CEM3372, which is a 3320 plus two VCAs). Soundwise they are
quite similar!

Florian

Florian