Mini Project: Headphone Modification

I recently acquired a pair of Sony MDR-ZX100 headphones as a door prize at a conference. When I took them home, I decided that I really like their rotating earcup design and I was surprised to discover that their sound is noticeably better than my ancient, beat up Sony MDR-V150 headphones. However, I have two complaints with the ZX100's:

1. The cord. It's too short (1 meter vs 2 meters), feels cheap and plasticky, and has a 90 degree plug. In short, I want my old cord installed on my new headphones.
2. For some unfathomable reason, Sony has added large plastic nubs to the ZX100 headphones on the surface of the drivers. They can easily be felt through the ear pads. In my testing, I found that these nubs create pressure, fatigue, and even pain after wearing them for a while. I need headphones I can wear all day long - these nubs are unacceptable!

My old headphones are falling apart, but the cord is in great shape. Instead of creating my own cord (a project in itself), I'll use my old headphone cord to replace the cruddy cord on the MRD-ZX100's. A little disassembly and soldering does the trick. Just be careful to not switch right and left, or reverse the polarity on the drivers. Since I replaced a Sony cable with another Sony cable, the color scheme and wiring was the same, which made soldering easier.

Disassembling the ZX100 headphones