With all due respect but in the interest of full disclosure, for those considering NC1200 amp designs it appears that there is a bit of misinformation here regarding the boards and components used in the Mola Mola Kaluga amps. According to this
response directly from Bruno Putzeys about customizations he makes to the OEM boards for the Kalugas (additional details about the changes are in the linked response), I quote this excerpt for your reference:
1. Lowest distortion input stage. Not available as an OEM component from Hypex.
2. nCore 1200 module with much higher quality components, selected by Bruno for their sonic qualities. Not available as an OEM component from Hypex
3. Switching power supply developed especially for Mola-Mola. Not available as an OEM component from Hypex