Pros: comfort, sq, bass
Cons: bass, build quality, isolation
These are wonderful hidden gems of headphone world. Using the same guts as the renowned D1001k they produce a bass driven warm sound without any bass bleed to midrange. Midrange is also well-done, male vocals especially. Treble is nice and has the occasional spark when needed. Presentation is adequate for closed headphones. Overall, the sound signature is quite fun for most genres, the only problem I had with them is the extra messy and fast metal pieces. The reason is that bass is not well controlled. I sense that -though I am no expert-, these are not technically most proficient headphones even in their price range.
Comfort is probably unbeatable. Build is decent but a bit flimsy. And lastly look elsewhere for isolation.
I can't believe that someone can get them for 70 bucks new and much less second hand. Such a great value!