Hi Zoran

> So, is positioning Doepfer A-123 before A-108 (with some
> careful resonance adjusting on both) going to bring out beauty and
> wierdness, just like on MS-20 (I am not expecting this combination to sound
> like MS-20, just to result in something sounding very nice).
>
> For example, 909 toms, filtered through resonated hi-pass/low-pass
> combination on MS-20, acquires a life of its own. So, can anybody point me
> in a direction of a sweet hi-pass (that can fit into Doepfer rack)

The MS20 filters are 12dB/Oct filters. So I think, you should use the
A-121 as Highpass and the A108 in 12dB mode as Lowpassfilter

Another filter that might be great (I mean GREAT!) for drum loop
filtering should be the announced A101-1. Imagine: Crossfader like
mixing of two beats by the filter frequency !!!

Florian