I had the Topping Dx3 Pro, version 1. It's very picky about the length or quality of the USB cable. The factory cable works fine, but too short for my need. I tried Amazonbasic, Monoprice and Mediabridge 6 feet cables in the under $10 range, but none worked. Did you guys tried a 6 feet to 10 feet cable that worked? I want to keep the price under $20.