Seriously? Where did you get this info?
Below is from Keith of A&H:
Regarding the build β the AB168 and DX168 use the same metalwork π
The DX168 uses dLive preamps β the analogue circuitry and conversion is of a higher level than the GLD/Qu AB168.
You mention maybe 3 stageboxes. If using AB168βs this would be possible with the addition of an SLink option card and an extra Cat5e run. With DX168βs you would add a DX Hub at the stage end to achieve this.
If you donβt need drops and plan to have all I/O in the same place, you could also check out the GX4816, this has the same technology as the DX168βs but in a 48Γ16 single 5U box.