Have some mixed opinions about the MJ2 which i got from massdrop for 99 bucks. I have done ~40 hours of burn-in and midrange sounds still muddy at times. Also with some tracks / bands (Nightwish and Amy Winehouse for example) the vocals are not clear/forward enough. They also struggle with the complexity of Nightwish "Ghost Love Score" and it sounds really muddy. On the other hand some bands sound really good - Rammstein for example - a lot of detail and suprising amount of soundstage. I have been using different sources, but mostly Fiio X3 gen 3 and Fiio E09K with Schiit Modi 2. Maybe things will change after more burn-in. Still, for 100 bucks they are fine atm, but for retail price i would be dissapointed. Two more things to mention - the box looked cheap. Putting a attractive female on the box to sell headphones is cheap, mid 90s thing. Looks really stupid tbh. Another annoying thing - the stock pads. For a retail 500 euro headphone you would expect more. Putting brainwayz angled sheepskins on improved the headphones A LOT. Headband could use more padding too.