One question, my DAC+AMP is Xonar Essence One , it has two balanced output port L and R port.
But this cable only one head, so this wouldn't fit on my DAC+AMP right?
tfcheungWhat's your cable termination? 4-Pin XLR? If so, you should be able to get a 4-pin XLR to dual 3-pin XLR adapter. However, it may not be worth it. Looking at the specs for the Xonar, it doesn't seem like the dac or amp sections are balanced, just a balanced buffer for the XLR outputs. And the power output through the XLR is actually lower than through the headphone jack, so there's no advantage in driving inefficient headphones.
So you actually may have better results using a single-ended cable or using an adapter to connect your balanced cable to the single-ended headphone output than you would using the rear XLR outputs.