Nice review, how well does it stay sealed given that it sits rather shallow in the ear canal?

@Sonic Defender  It stay sealed very well to my surprise due to extremely light weight. I guess that it depends on fit. With large tip, it stay sealed for long listening session for me without causing irritation or fatigue. I also have Ety ER4 which is deep insertion required and this one is much better in terms of staying seal for me at least.

Had an opportunity to try them during CanJam, i think they were pre-production at that moment. Crazy good sound for the price.

nice review, thanks! i especially appreciate the comparison with the yamaha as these are both on the top of my wishlist. which one of these would you pick for rock/metal music?