Captouch,
That is awesome! Glad you picked the Yammy. Was yours black or silver? When you indicated the model number, I did some searching on it and realized both colors were available. With my Yamaha gear, I leave the Bass and Treble in the flat settings. I only adjust the variable loudness control based on the genre or artist that I'm going to listen to. There's a lot of love for the HE-400s at the moment, which I also have. But, when you really want to do some critical listening, the HE-5LE is where it's at. Don't get me wrong, the HE-400s are also very good. I was using them a bit tonight - but they need to go to HifiMAN for some chemotherapy. The best group I can think of to test the HE-5LEs on has to be the Carolina Chocolate Drops - "Leaving Eden". The percussion that gets revealed on the 5LEs is nothing short of stunning. The HE-400s can play it, too, but with the HE-5LEs, the instrument separation is just ever so slightly better to make me a slight jaded.
Enjoy!