But I don't understand your reasoning. Is it to say that trying to come up with new methods of improvement for these phones is bad? Maybe you're being very conservative; a feltist, if you will?
Convolution certainly stands as a useful means to improve the sound for anyone's purposes. Think perfect channel balance without asymmetric modding, though even then you're limiting yourself to a very modest use of the technique.
for anyone's purposes that include a full blown computer as a source.
I got the best results with my stock yh-100 through a headphone jack on a 1994 JVC cd player: xl106... can't remember the exact model. Though I think you're smoking crack on most of this sentence, because people listen for different ranges of music and it's stupid for a headphone to try to please everyone. My opinion is that I was getting a very realistic sound from them, especially from piano and classical music. I also felt that they sound like a 3-way speaker in the way that they handle multiple sounds at once, versus some others that sounded like a 2-way at best. Maybe my pair was optimal to yours, or maybe you were getting too technical for them with $2k amps and DACs. I agree that they are not perfect, but they are special compared to other stuff in their price range. Don't feel sorry for me and my simple ways, because I won't feel sorry for you and your snobbish opinion.
In general i do build amps but I only have the one dac, and i've only had it a year or so. Every stock yh-100 i've heard sounds sort of weirdly muffled and honky. I'm not the only person who's had that reaction.
your 2-way vs 3-way analogy is weird. some of the best speaker systems are 1-way.