I bought this but haven't been able to get audio to my headphones...here's my system: Wiim Pro Plus optical to Schitt Modi 3 RCA output to Topping A9D RCA input. I choose the selector for RCA and the proper headphone output and...bupkiss! nothing at all. Is there something I'm overlooking? As a newbie to this hobby, I realize I have much to learn. Thank you.
Besides the actual plug itself US/EU. Are there 2 different models one that is 50hz 110v and the other 60hz 220v? Because if not I could just buy the American version and change the power cable the cost me less than $10.