guys, I came in here to recommend an awesome equalizer software for our HE-400.
We all know the flaws of HE-400. It's a known fact that abit of EQ is a part of the solution to it too. However, I am pretty certain that we all noticed when EQing that there can be distortions and also not sounding quite as it should, losing the magicality of the sound prior to EQing.
BUT! somehow, with this software called equalizerAPO, even when heavily EQed, to reach near neutrality on the HE-400, the sound coming out of the headphone sounds as natural as it would be with no EQ done, yet with altered frequencies. No distortions too, of course. My reference neutral sound is the RE-272.
Thus, I searched the whole of Head-Fi whether anyone was really aware of this program but it seems as though it is basically an unknown software. I really had no reason to share this information but thought would be appreciated for those that actually try it out greatly.
With this equalizer, I have lost all desire to upgrade, either to HE-560 or PM-1. That's how significant the difference was for me.