According to Wikipedia, Martin Logan is an American company producing a variety of floor-standing hybrid, wall-mounted, and in-wall speakers using electrostatic loudspeaker and planar magnetic thin film loudspeaker technology, as well as conventional subwoofers.
In September 2012, they introduce their first IEM, Mikros 70, which is "inspired by the clarity and detail
of MartinLogan’s legendary high-end electrostatic loudspeakers", and should deliver "realism, richness, and purity" to listeners, according to their claim. It will certainly be revolutionary if a dynamic driver's electroacoustic performance is close to that of an electrostatic driver.
PRO: Very clean transient, Super-low distortion, and planar driver-like impedance linearity, which yields no frequency-dependent attenuation. What, no resonance?? Just feels like orthodynamic from 30 years ago.
CON: Absolutely flat. No sign of diffuse-field in its sound, similar to an unmodified UE900. A slight channel mismatch in the mid frequency range. The high frequency bandwidth is up to the specification, but with a large downward tilt.
Quick measurement links
Headphone measurement data by brands:
AKG • Apple • Astrotec • Audeze • Aurisonics • Beyerdynamic • BOSE • Brainwavz • Brookstone • Creative
Earsonics • Etymotic Research • Fostex • Final Audio Design • Grado • Heir Audio • Hidition • HiFiMAN • JAYS • JVC
LEAR • LG • Martin Logan • MEElectronics • Maxell • Monoprice • NuForce • NVX • Ocharaku • Phonak • Radius
RHA • Rockit Sounds • Samsung • Sennheiser • Shure • SONY • STAX • Suyama • TDK • T-PEOS • Ultimate Ears
Wall of Shame (coming soon)