I have a DS74. I’m not impressed.
When I bought it new it wouldn’t throw a Peco Pl10 at all, even one dangling in the air, not attached to a set of points.
I’m in the US, so Digitrax had me send it to their Florida HQ for repair. Now it’s back it just manages to throw the points, but it’s only just! I’m using it with a Digitrax 14v PSU the internal CDU switch is on.
I won’t be buying any more of these. I managed to get a DCC concepts decoder (a little difficult here in the US) but it is way better than the Digitrax.