Ok, I'm not going to paste my entire review in here it's over 4000 words, and quite probably the most comprehensive review ever of a product being delivered as a bundled product, so I'm just going to point at my actual review:
If you want a short TL;DR (Which I can understand, given the length):
- Much better than expected bass - much better than the Nuforce NE-700X, but not quite as good as Senn HD 558 or B&W C6
- Average detail reproduction: On-par with the Nuforces, but not as good as the Senns or B&W's
- Sound stage that beats just about any headphone, I've heard, ever!
- Look elsewhere if isolation is a requirement
- It's popular to hate Apple, and some other reviews reflect that - but these are worth $29, even as a standalone purchase, provided isolation is not an issue.