Hi guys, just got the chord mojo as I thought the Onkyo DP-X1 wasn't loud enough to drive my MDR-Z7. However, what is the best way to get maximise the sound quality? Is it a 3.5mm to 3.5mm jack ? I thought these are normally "low quality" when connected like this. The Onkyo doesn't have an optical out either which leaves me USB to USB connection ? What are your thoughts ?