Still new to HF, I've found my learning curve to be more of a spiral. I'll start reading up on one concept, then see something that takes me in a completely different direction. I don't understand much about electronics and I'm not familiar with audiophile terminology. So I was hesitating on making any choices. Until the past week.
I got a Zero dac/preamp/headphone amp, which I immediately began burning in. I already owned a pair of Grado SR225's, which I had bought several years ago. As the burn in process continued, I received a pair of Sennheiser HD700's that I bought from a fellow HF'er. So I started to try to compare the two sets of headphones. I'm not yet really able to put into words everything I heard, but I did notice the 225's seem brighter than the 700's.
Then I noticed is that I was gravitating more to the 700's. I can't say that the 700's are "better" than the 225's, although I understand the 700's are higher up the Sennheiser ladder than the 225's are on Grado's. The Grado's just seemed to be more tiring to listen to. It could be that the 700's are still new to my ears. but I don't think that's it. I think its because the 225s sound brighter to me, and maybe that's not the signature I like. Don't know what it is.
I did notice, also, that I can crank up the volume on the Zero with the Senn's higher than with the Grados. Could this me simply that the Senns have a higher impedance than the Grados (150 vs 32)? Or is it the brightness thing? A combination of the two?
Whatever it is, what is it that you guys find make some headphones more tiring? While I've seen comments about this, I wasn't able to find a thread specifically on the subject. If someone can point me to one that exists that I missed, that's fine by me.