I don't know if the A-107 has a 4-pole high pass, the A-106-6 does not (1, 2 and 3-pole).
I got an A-123 via ebay auction and having all other Doepfer filters, too, I can say there is no replacement fot it in the Doepfer line-up today - it sounds just great.
If A-107 or A-106-6 do the trick for you - go for either or both - they are very good in their own way.
If you need 4-pole high pass to feed your A-117 then you have to look at other manufacturers like Division 6 (Filtare SEIII) or Cwejman MMF1.

regards
J.

--- In Doepfer_a100@yahoogroups.com , "john m" <jmaddocks1975@...> wrote:
>
> Just noticed its been discountinued, is there a replacement planned
> The A117 needs a good high pass to create a decent cymbal/hats, the A124 & A121 simply can't do it. Can any of the other multimode filters manage it
>