With the Massdrop x Noble Kaiser 10 custom in-ear monitors, we’re bringing back Noble’s previous flagship—lauded by Forbes, The Verge, and InnerFidelity, and long rated Head-Fi users’ favorite IEM—for a more accessible price. Also known as the K10, this model uses the same tuning as the Noble Kaiser 10, with 10 Knowles balanced-armature drivers per ear. Each pair is assembled and matched by hand, and the precision-machined faceplate and shell can be customized with your choice of artwork or swirl designs. This CIEM is sensitive enough for use with smartphones, as well as portable digital audio players and amps.

• “These are the best-sounding in-ear headphones I’ve ever heard. They’re the sort of headphones that make you want to listen to every piece of music you can find, just because you’ve never heard any of it sound so good before.” – Simon Osborne-Walker, Trusted Reviews
• “Noble Audio has crafted one of the best examples of what expensive technology should be. It is exclusive and luxurious, but it's also authentic. The Kaiser 10s have the superior sound and sumptuous good looks to justify their price.” – Vlad Savov, The Verge
• “I’ve listened to tens of hours of music on these headphones now. I’ve listened to pop, classical, rock, electronic and everything I could find that was recorded with some care and love. The result, almost across the board is, honestly, the best sound I’ve ever heard.” – Ian Morris, Forbes
• “The Kaiser 10U is uber-transparent: From the deepest bass to the highest treble, the sound remains true. Even compared with my very best in-ear headphones, the Kaiser 10U sounds more accurate and pristine. Bass notes never cloud over or blur together, no matter how deep.” – Steve Guttenberg, CNET
• “Of all my in-ear monitors—scratch that, of all my headphones in general—the Kaiser 10 is the one I find myself reaching for most often these days; for portable use but also for dedicated listening at home.” – John Grandberg, InnerFidelity