I suspect Corel has for some reason set itself up as either an Aggregate or Multi-output device in AudioMIDI
Applications > Utilities > Audio MIDI Setup
Cmd ⌘ 1 to show Audio devices if it doesn't show automatically.
If my suspicion is correct, you will see one of the 2 circled icons, named after Corel.
Select, then click the - sign underneath to remove.
This won't 'break' anything. These device types are user-created & deleted. It will not allow you to delete any real device.
Boom2 may also have set itself up in a similar way, so make sure to get the correct one, if you wish Boom2 to continue working correctly.
BTW, it is highly unlikely to have an actual associated driver installed, it is merely a way of 'patching' outputs for convenience, all done using Apple's own routing capabilities.