Alternative bottom design: taller and with hole for jack power supply connector
thingiverse
If needed, use connectors like https://www.ebay.es/itm/10X-DC-Power-Supply-Jack-Socket-Female-Panel-Mount-Connector-5-5-x-2-1mm-FO/162672736505 (be sure they fit your power supply) The taller version (around 5mm) is needed to use vertical audio add-on PCB. The cover is the same, here just for my convenience.
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