In the world of earphones, there are some obvious tiers: the bundled earbuds that came with your PMP or cellphone and should probably be dumped straight away; their mainstream replacements; off-the-shelf in-ear monitors (IEMs); and then custom-molded IEMs. There’s also a less publicized hierarchy, of the audio craftsmen behind the IEMs themselves. Ask an audiophile their opinion of Jerry Harvey, and you can probably expect an hour or two of hero-worship; having tested out the new JHAudio JH16 Pro custom IEMs, we now know why. Check out the full review after the cut.

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