In the process of reaching 50 hours burn in mark. Highly dependent on source (recording quality and DAC). Obvious bottlenecks. Still under observation and after 300 hours listening period, will update my impression again.

Definitely not a fun headphone compared to AT W1000x or Denon D-series.Sounded completely cold and analytical fresh out of the box. Bass was almost non-existant. Burn in using pink noise seemed more effective compared to normal music playback. More instrument seperation after reaching 400 hours pink noise burning. Any hours beyond 600 will not benefit as I did not feel any improvement starting hour 601.