EQ'ing that bass in is effortless. Got a 4.4mm cable for them with a nice braid.
I do gaming with them and it just feels so freaking wide.
I'm a percussion guy. Drums and intricate percussive ellements, in music, sound blissful.
Try listening to Dinossaur - OTR Remix, close your eyes and have fun.
I'm pretty sure I was reading a thread just a day or two where people were discussing how headphones haven't really gotten that much better value for money in the last 10-20 years, and only IEMs have.
I'd have to completely disagree with that and I think headphones like the HE400SE are a great example of how we're getting a lot more for the same amount of money now. $109 for a planar with the same overall signature as most of Hifiman's higher end offerings, or closer to $90 if you go refurbished/open box, is a pretty nutty deal.
At that price even the usual concern of Hifiman's QC issues becomes not much of an issue because in the $110 and below range lots of offerings are very limited in terms of QC, build quality, whether or not they have removable cables, etc.
I read a lot about this set, and the sentiment you have is unanimous almost. I was afraid to get a bad cable version, or get unlucky with the QC. But everything came working well and I did get the sweet leather cable.
It feels like it should cost more (hopefully doesn't!!)