Could you please advise which power supply would be suitable for the Mikrotik Audience?
The burnt one indicates 24V - 1.5A.
Would this one be suitable - MikroTik SAW30-240-1200GR2A power supply?
Or should a more powerful one be used - MikroTik 24HPOW power supply?
The first one initially appears under-powered, but given the Audience’s 27W max power draw spec, you come up with 1.125A at 24V, so 1.2A may work. The main worry here is that you’re running the PSU right at its limits and thus may shorten its life.
I don’t have a good sense of how you would make the Audience use less than its max-rated power. I assume it has something to do with radio settings and CPU usage (e.g. number of routing/filtering rules) but I cannot even guess how much further down your actual use case will put you. If your setup only takes 12W, then you’ll be more than covered with the smaller of the two PSUs.
The bigger of the two is meant for routers/switches that can deliver substantial amounts of PoE power. It should work comfortably, though it’s overkill for your purposes.