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.
Have you an opinion, used or been to this object or place? Tell us what you like don't like about it, or post any specs/info about it:
