Pros: Low profile, exactly the length needed, sturdy
Cons: Know the length of the cable you're buying, a bit pricey
Fantastic product for doing what it is supposed to. For those who do not know what its purpose is; it is meant to skip the iPod/iPhone's internal Headphone AMP so you can use your external AMP to the best of it's ability. I used it with JDSLabs CMoyBB to my DT770Pro 250ohm and did see a reasonable difference.
I would recommend for i-device users who want to get proper amping.