http://www.head-fi.org/t/727341/new-fiio-e11k-portable-amplifier-info-news-thread-early-impressions

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Conclusion: While the E11K boasts good sound and features that is legendary to its predecessor - the E11 Kilimanjaro -, it falls short on its usability attached to DAP's, and the physical build design that it uses. It is largely a somewhat clunky unit that has some kinks that need to be worked out. But despite these shortcommings, FiiO is still pushing out an agressive product thanks to its sound and relative issues with like products; most units like it have the same problems - so as not to fully discount the E11K's usability - and often times cost more. The E11K is situated in an agressive market, and this time, it features the stealth like build, and great sound at an even better price point