Originally Posted by TMRaven
I don't really want a side-grade to the HE-400, seeing as how views on HE-400 vs mad-dogs are split. At least I know the HE-6 will deliver the same Hifiman bass.
The sound signature of the two are different enough that that two are complimentary. The Mad-dogs are just smooth (if I had to pick a word to describe them), the music sounds as it should, bass when needed, mids when needed, and smooth highs. I regret selling mine everyday (they help to fund the Lcd-2 purchase), they were a great kick-back and enjoy the music HP.
I was going to re-buy them and saw a set of W1000X's on here for a decent price, they have not left my head since, they are unique sounding enough that they put some excitement into my music collection.
So to call them a side-grade is accurate, but they are different enough to own both.