My taste says it beats sundara out of the water.Interesting. Never compared them, don't have the Susvara. I find the HE400SE to sound very close to the Sundara, which scales similarly.
It sons the Arya V2 and expose all its weakness.
It has now come down to beating HE1000 Stealth for me!
Im serious!
Im putting one more order on it. 32Ohm. I have the Int. 25Ohm version