I've been trying to pair down my headphone collection (and maybe make some upgrades) and it's getting difficult. My problem is that I'm having trouble discerning some of the differences in sound quality. Right when I think I've nailed down some favorites, different songs and genres start muddling up my conclusions regarding their sound. I guess what I'm asking is:
What methodology do you use to determine the quality of your 'phones?
Do you use the same sources, amps and tracks? Do you switch it up? I tried taking notes with just marginal success. When the quality of the headphones being tested is close to begin with, I feel like I completely lose any objectivity in the time it takes to plug in a different pair and adjust the levels. I can easily discern the different sound signatures of various 'phones, but beyond that, I'm just spinning circles.
I tend to favor a more analytical approach, but that might not even be very plausable when just listening "by ear." I'm very interested what methods some of you more experienced Head-Fiers use to compare and contrast the quality and value of different headphones.
I have purposely avoided mentioning the headphones I'm currently testing because I didn't know if that's relevant to this question or whether it would color the responses I get. If it is important info, please let me know and I'll tell you which ones I'm struggling with. Thanks!