This SGC LPS will do the job. You can get an equivalent with a Talema transformer direct from China for half $ but it will take a couple months.
https://www.smallgreencomputer.com/products/12v-linear-power-supply-50w-sonictransporter-i5-roon-nuc...
The next step up is a Keces P3 for ~$400 new but if you're patient they often come up used as power requirements change.
https://www.smallgreencomputer.com/products/12v-linear-power-supply-50w-sonictransporter-i5-roon-nuc...
The next step up is a Keces P3 for ~$400 new but if you're patient they often come up used as power requirements change.