(+) Passive acoustic insulation: very good thanks to a closed circumaural design and
(+) Port Comfort: good adaptation to head size and comfort of the shape memory foams (the best for this type of need)
(+) Sound quality: excellent bandwidth, and stereo balance
- Certainly linked to 50mm Neodymium transducers and magnets
(+) Build quality in general, robustness and ergonomics oriented design
(+) Removable, modular cables and quality (elastomer sheathing)
(+) Compatible music listening function + iPhone on the phone (and similar) = one headset to two uses.
() The record does not show that it is necessary to position the microphone in a way for optimal performance (related to the cardioid)
() No microphone (for voice) when the external microphone is removed
() Lack of cover or box for storage
() Quite large
() Design which quickly risk "dated" and very discreet
Conclusions AUDIO
Competes very well (technical point) AKG K550 with a helmet that is much more expensive (250)
Excellent return instrument studio headphones for a drummer or bass player (because of low quality)
Can also be used successfully in return + intercom (via the microphone) on audio / video quality benefits