Alembic openly acknowledge that their preamp designs were influenced by old Fender designs - not very hi-fi, but very musical and have stood the test of time. Mid cut, rather than boost, is a feature of those old circuits.
If you want ultimate tone shaping flexibility you need an SF2. You could achieve mid boost either by setting one filter as band pass and centring it in the mids, or you could apply cut to the bottom and top by setting the filters as high and low pass respectively.
There is a DI on the F1X preamp.
