Ok I found the answer, and it was the voltage. I got a 110-100V converter from my friend and the Duo works fine now. Turns out that extra 10 volts makes the difference between reading data properly and not. So there's the answer: Use your duo with the proper adaptor and all is well. 110V won't break the Duo... at least it didn't break mine. Perhaps since I didn't leave it on for long.
BTW I was playing original games, not CDRs. Thanks for the help anyways guys!
BTW I was playing original games, not CDRs. Thanks for the help anyways guys!


12/06/2023: Localization News - Tengai Makyou/Far East of Eden: Ziria!!!