Merging Anubis Premium, User Manual

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should prevent ground loop hum.
If you have several units in your setup then one of these units could
be causing a second ground path which would cause ground loop
hum. To narrow down which unit is causing the problem, have your
system up and running and physically disconnect each unit one by
one to see when the noise stops.
For Anubis users experiencing such problem Merging recommends
the use of the Power over Ethernet (PoE). To avoid ground loop issues
connect the Anubis RJ45 RAVENNA network port to suitable PoE+
source (network switch) and disconnect Anubis the DC power
connector. In most cases this will solve the problem.
If you cannot use PoE and if a ground loop noise remains apparent in
your headphones and/or monitors when using balanced cables, while
you are unable to find the source of the second path to ground in your
set up. You can get a ground loop isolator noise suppressor box that
prevents audible ground loop issues.
Note that a buzzing noise, can also be caused to magnetic field
interference. If your Anubis is very near; Laptops/Computers (with fan),
power amps, speakers, guitar pickups or any device that includes a
magnet. In this case we suggest that you keep your Anubis at a distance
of at least 60 cm to those devices and/or have the Anubis fan set to Low
mode.
On Mac auditioning mono
files through VAD routes the
audio out to channel 3 macOS issue.
Merging has no
control over this. When playing a mono track the audio is routed to VAD output 3
instead of outputs 1 & 2
Workaround: Reducing the number of output channels in VAD to "2"
will force mono audio to be properly routed to those outputs.