The worst sounding headphone I have ever bought is/was a Philips SBC HP200 "HiFi" headphones on sale.
Whatever the source is, you need to ramp the volume up high, and depending on the device, sometimes to the max, to get to hear anything! That's not all, the sound is unequal, midtones are washed out, low tones are low in volume, and high tones seem to make it through just fine.
When watching movies, the lower frequencies sometimes cause an alias frequency to form and an additional vibration becomes evident in the headphones which lessens the enjoyment of the movie in question.

It has got two cables (left and right, really old skool) from both speakers, so that I can get entangeled well enough and the cable is unneccesarily long (think jumprope long).
The good thing with this headphone is that they are comfy to wear. That's just about it with the pros of that pair of headphones.
