Kramer Electronics VM-50AN - Manual (Page 12)

VM-50AN - Using Your VM-50AN 1:5 Audio Distributor 9
3. Connect the 12V DC power adapter to the power socket, connect the
adapter to the mains electricity, and then turn on the power switch.
4. Adjust the right and/or left output signal level, if required.
Insert a screwdriver into the hole and carefully rotate it, to trim the level.
Figure 4: Connecting the VM-50AN as a 1:10 Audio Distributor