Happen to have the power supply PCBs as well?Here you can order a pcb Apex-14:
https://www.pcbway.com/project/shareproject/Apex_AX_14_2.html
And here you can order Apex-17. Also a good amplifier.
https://www.pcbway.com/project/shareproject/Apex_AX17_amplifier.html
There are simple with a diode bridge and diodes.
https://www.pcbway.com/project/shareproject/COMPACT_CRC_PSU_0dea58f5.html
https://www.pcbway.com/project/shareproject/COMPACT_CRC_PSU_6669f266.html
https://www.pcbway.com/project/shareproject/COMPACT_CRC_PSU_0dea58f5.html
https://www.pcbway.com/project/shareproject/COMPACT_CRC_PSU_6669f266.html