I have made a pair up and have to say they are very interesting. I think they do sound very good, but I do have a slight hum at high volume and a louder hum if I touch the cable.
Any ideas on this?
Both my headphone amp and Raspberry Pi/Boss Dac don't have an earth connection at the plug, both mains cables are only 2 core.
Is this causing the hum?
Both the amp and cables are silent with a screened cable.