I'm going to skip the very subjective "quality of the sound with this cable" question and just say that the cable looks and feels like the original and I haven't notice any difference in the sound quality. It's fine for me. Take that for what you will.

Sorry, I wasn't sure if linking was allowed here> http://www.aliexpress.com/item/Replacement-Audio-Cable-Cord-WITH-MIC-AND-REMOTE-for-sennheiser-MOMENTUM-on-ear-headphones/2025769006.html  

The replacement momentum cable on Aliexpress. I chose the OEM model. In black  AND Red. So far, so good.  

Update: My bad peeps. It took about 5 months of everyday use for my cable to break down. It went Near the end I went wireless and haven't really looked back. I did pick up a well priced ($20USD) replacement cable on aliexpress. It would appear to be precisely the cable that comes with the...

Those cables from china for $16 are the correct cables that I mentioned. Look at the pictures and you'll see they have the little groove on the side of the head just like the OEM cables. Available in black or red. So far so good after a few weeks of rugged daily use. I've got my headphones on 10...

@ Crookl, The cable I got is fully functional. Microphone, remote buttons. I live in Alberta, Canada and the cable has been exposed to sub zero (centrigrade) temperatures and has held up very well for nearly a week (I know, that's a long time. jokes). Fingers crossed. the cable looks good, feels...

Hey everyone, do yourself a favor. Go to e.B.a.y and search: "Replacement cable with Remote Mic connect iphone to Sennheiser HD598 HD558 HD518". There is a seller out of HK selling this cable for $17 CDN ($16 USD). I ordered and got it today and it works with the Momentum. It was a tight fit for...