One owner, bought new.
Comes in original box and packaging, power cord and printed manual.
Bought for a project that never came. Used very little, sat in the box more then it was used.
https://mackie.com/products/onyx-blackbird
https://mackie.com/sites/default/files/PRODUCT%20RESOURCES/SPECS/Spec_Sheets/Onyx_Blackbird_SS.pdf