H-400 vs. AKG K712
Preface: You could love either one of these..both are really good. Its more apples and oranges here based on preference. These are stock versions of both. Both are brand new out of the box.
Call this a very unscientific review and please feel free to bash me. I broke a bunch of rules here... I did not have time to burn in the headphones... I am using 1 amp that is 10 years old (Musical Fidelity X-Can v2) and an amp I just got yesterday with only 4 hours on it (Schiit Asgard 2.. which I now have properly working and will be keeping although its really running hot!)
Playing all downloaded movies and 2 songs from outofyourhead.net (songs were Money by Pink Floyd and Hotel California, Eagles.)
Total listening time: 11 hours
Amps: The MF X-Can v2 was simply better, played louder and tighter, made both sound better. Made the HE-400 sound better than it made the AKG but both were better. Could be the Schiit needs more time to break in.
So I took a different approach... I just listened to different material..did an A-B comparison and wrote down my emotion, or an adjective or just a thought. Like I said, very unscientific....
Controlled bass not muddy
Not as deep bass as 400
Voices sometimes sounded like in a closet
Less fatiguing at higher volumes
Sometimes scientific sounding, sometimes a little hollow but getting better over time.
Deeper bass but muddy sounding sometimes
Voices more in foreground, but not as clear
Bass is overwhelming mids and maybe highs..distracting
Mids can be muddy (maybe because of overwhelming bass?)
Subdued .. melo sounding compared to K712
Sounded like a veil over some sections vs. K712
Warmer overall sound.
Not as balanced.
"Attacking" personality: dynamic
For me, my choice is the K712 for how I am using it... its more balanced. It took me a long while to decide this..I really wanted to like the 400.... Not sure if Focuspads would solve some of the issues above for the 400?
Unfortunately, the HE-4 did not show up today! Ughhhhh. I am wondering if the HE-4 might be something in the middle which might be what I am looking for.
My thoughts so far..still listening.....