For lovers of ITS GOOD and listening COMFORT

(+) * The quality of sound reproduction [see note]: deep bass but not "blurred", psychics and precise and clear treble without being aggressive, and a stereo with go in terms of spacialisation (with the right answer impulse). In short, listening MONITORING!
(+) Finish quality: choice of materials and colors, pocket for all
(+) Solid metal body: a REAL "PLUS" = gives good sound insulation and also ensures good rigidity for low frequency reproduction
(+) Good section cables, long enough, elastomeric coating. Sockets and metal fittings.
(+) All tip sizes declined under 3 types of tips on everything double! This allows an adjustment "to measure" for our needs.

To date, my helmet BEST IN-EAR liability that competes very well with a good active IN-EAR (type digital noiseless)

* IMPORTANT NOTE: the perceived sound quality is dependent on the upstream headphone amplifier (integrated type iPhone FiiO, / or external type FiiO, SMSL,). The frequency and dynamic balance will be affected by the "e" upstream without the headset is directly responsible.
Eg on the FiiO X3, a small imbalance with acute severe back and back, corrected by [Bass 3]. I have not found this imbalance on my headphone amp SMSL SaP and the sound is perfectly linear.