Are manufacturer AC cables good enough?

For delivering power to the gear of which it came with ? Yes , I would at minimum put the AC3 on the Ayre and go from there after you hear how much better it can get.

I think manufacturers cables are sufficient enough to get the job done. Maybe it is cutting costs, or they have intentional designed their equipment to work well with bulk cable. But getting the last bit of performance is for happy tweakers something to look for.

Some power supplies perform better with quality cables, or sometimes a better cable doesn't interfere as much with the rest of the cable salad behind you rack. Just test and listen.

Try out what you have, come back and tell us if you heard a difference.