Using earphones in XBox360

As I poster some weeks ago, I bought a new LCD, 21.5″, with HDMI. The idea was to use it as a second monitor on my Mac Book Pro (done that already) and to use it to play with my XBox 360. Tried to do this latter, but it was not possible.

Why wasn’t it possible? Because I am stupid and I bought an LCD with an HDMI connector but without sound support. So, the LCD doesn’t have speakers and Acer didn’t bored to add a sound jacket.

When searching for solutions, I remembered that the gamepad has a 2.5mm jacket for a headset with microphone. I tried a standard earphones with 2.5mm jack but it did not work. Searching on Google I found the adapter shown above that, apparently, splits the signal from that connector into two different jackets, one for microphone, another one for earphones.

My current doubts for anyone who already use one of these:

  • does anybody know if the sound is stereo?
  • and, does it work for games, or just when using XBox360 for online conversation?

Oh, and of course, if you know another solution, please keep me posted.