What I find interesting is that a full size headphone with that shelf style FR could sound neutral and balanced. If the SR-009 actually accomplishes that I find that quite neat. I don't think the LCD-2 rev2 quite accomplishes that magic auditory illusion. Looking at the Inner Fidelity FR graphs for the HD600 and SR-009 and there's 10+ dB differences in areas for midrange through treble. Yet both are being considered neutral and balanced. I find that interesting. I don't think you'd find the same sort of 10 dB discrepancy in any two brands of speakers that are considered neutral and balanced. But speakers aren't headphones. And if 10 dB differences between the HD600 and SR-009 can allow both to be considered neutral then why not 10 dB differences between the LCD-2 and SR-009?
I don't quite consider the LCD-2 rev2 that I have to be perfectly neutral and balanced. If it was I wouldn't have such an urge to EQ it. I like it with a 2 to 3 dB bump between 3K and 5K. Or I do a shelf EQ that raises everything a dB or two from 3K on. It sounds better to me like that and closer to neutral to my wonky ears. I also think my EQing choices could change a bit as I try different amps. So this neutral and balanced thing for the LCD-2 is still undecided for me.