So I received my 2 pairs of $8 sony MH755 earbuds from a local online seller.. based on their clarity, soundstage presentation and depth, instruments separation, transparency, and overall tonal balance, i think they are either original or excellent quality fakes..
One thing that bothers me quite a lot though is the sub bass boost.. it literally rumbles my ears and is waaay too much on tracks with low notes, such as Hotel California (Hell Freezes Over).. I think this is consistent with the earlier FR graph which says that the bass is boosted by up to 15dB..
On the other hand, I am really amazed how Crinnacle's loaner pair with the cable pin mod can have such a flat frequency response including the bass.. would be curious to see how his own pair from the sony SBH56 turn out to be..
Cheers!