I sir, I just bought a Sennheiser HDR-126, and my problem is; I can't make it work on my pc. ** My audiocard on my pc work just fine, I can listen to music, video through my speaker just fine. ** I just can't seem to find a way to make it work, the wires are well connected, the powerbase's power is on, as well as the power of the headphone, I feel like I have tried anything, I have change the channel, played with the tuner on the headphone, the volume, noting! Please help me! thanks in advance