That also makes me confused. My friend cut stock cable and try to replace 6.3mm jack with a 4pin XLR. He told me that there is no shielding inside the cable, and the wires are extremely thin. I also compare the stock cable with T1's stock cable, the latter one is the clear winner. For me, the stock cable lacks of treble extension,and it's too dark which make Z1R an overprice HP.