Help with Roksan Caspian 5ch amp secondary voltages

Hello everyone!

Could someone help me with secondary voltages from a Roksan Caspian 5 Channel Amplifier?

I have 2 modules (like in the pic) from a friend but without transformer!

The pcb, already contains the bridge rectifier and two caps at 63v 10000uF.

I made a test with a 41-0-41 vac, it works, but I'm not sure if these voltages are safe

Thank you!
 

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