Looks like I may have a dud dac. I’ve tried both the original and the new USB 3 camera adaptor with the iPhone, pc laptop directly connected, USB c - USB otg with android and multiple USB a to USB cables from these to the e30 and I get the USB err error on all. Prob spent more on adaptors than...
It looks like it works with the apple camera adaptor.
For some reason know not to me you need to connect the iphone while the dac/amp are turned off. Once connected turn the dac /amp on and away you go....assuming you can get the janky l30 power adaptor to stay balanced.
I have just got my topping e30/l30 and im looking at source options, one of which is my iphone xr. I have a apple camera adaptor thats connetected to the supplied usb cable but getting no sound. Trying to stream spotify and tidal. The e30 does briefly flash 44.1 on connention.