I got myself the HE-400i's as of the past two weeks and have been listening to them through a Modi 2 Uber and an Objective 2. I think the sound quality is stellar, however I have some issues. My first one that I noticed is the plastic ring holding the grill mesh on the right driver was bent. I'm not sure how nor why but I removed it and turned it a bit and it seems slightly less bent. My other, more grave issue are the 2.5mm connectors. I can pull back on the plug on my right side and push the left side and the sound just seems to spasm and cut out for each respective sides, as if the connector themselves are just ever slightly too big for the 2.5mm plugs and the plugs can wiggle and lose their connection inside. Did anyone else experience the same thing with their 2.5mm connectors?