Disclaimer: Measurement has been carried out with a pair of Shure Olive foam sleeves. This pair, owned by a good friend named V.K., has been revitalized by cleaning the nozzle & adding a new pair of dampers. Enjoy!
Along with SCL5, SE530, which was released in 2001, was Shure's top-of-the-line IEM, featuring triple balanced armature drivers. And in 2010, Shure released a revised version, SE535. However, other than the detachable cable with MMCX connection, the sound quality of SE535 seemed to be more or less the same as the original.
CON: The high frequency bandwidth goes only up to 15 kHz & non-linear impedance characteristic.
ON SECOND THOUGHT #4: FYI, if any of you SE535 owners want to experience the sound quality of SE535 Special Edition, specially designed for the Japanese market, simply pop in a pair of 330 Ω gray dampers. Rly?? See it for yourself:
Left: Shure's official comparison chart // Right: My "emulation" of the comparison