Or you could try getting custom cables from ghentaudio.com 2 RCA to 2 RCA custom length -> http://www.ghentaudio.com/part/a01.html Yes this cable is perfect for Fiio X3II Coax Digital out to Modi 3 Coax Digital In. ghentaudio also has a cable for that, not sure if it will work with Fiio X3II...

Power supply is different between Modi 3 and Modi 2 Uber. Modi 2 Uber was on sale at $150. I guess something to do with the powersupply. Someone can shed some more light on this.

Hi All, @Shanling , I got the M0 to use with BT HF Sennheiser PXC 550, because my iOS devices do not support BT aptx and PXC 550 does not support BT AAC. However the SQ from MacBook Pro with aptx to PXC 550 sounds so much better than M0 with aptx to PXC 550. The SQ of PXC 550 with M0 is bright...