I have the Sony MDRX10. When I use the cable with the mic, I get lower volume level and distortions at max volume but when I use the headphone only cable, I get much better volume control.
I tried using both cables with my smartphone, and they both produce the same volume. Also, I tested with a portable amplifier connected to my Macbook and then the cable with mic; this gave the same output as the one without the mic. This makes me think the problem is associated with Mac OS X.
Machine specs: Macbook Pro 13" Mid 2012, Yosemite 10.10.4