It's extremely hard to compare custom IEMs. Few users have more than one pair, so direct personal comparisons are rare. They can't be measured by InnerFidelity because they don't fit in the measurement head's ears. What to do?
Damn the torpedos, full speed ahead! In this review 5 InnerFidelity writers, blessed with the generosity of manufacturers willing to put their ToTL CIEMs through the ringer do a massive comparative review of 24 of the worlds best custom in-ear monitors.