I disagree that T1 beats HE-500 in everything, but bass. That's not true at all IMO. Firstly, look at the measurements for both - objectively, HE-500 is actually the better headphone. T1 has very apparent ringing, while HE-500 is much cleaner. Whether that's audible or not, is a different question, but the fact is that HE-500 measures cleaner than T1. Secondly, I think that HE-500 can easily match, if not surpass T1 in clarity, tonality, transient response, resolution and almost everything else actually, except for soundstage dimensionality and maybe imaging. I love the sound of both, but I do think T1 is overpriced compared to HE-500, as it's not better overall and yet costs significantly more.
Yup. I'm surprised the T1 hasn't been wrung out more on head-fi. I think that in many ways people hear it and due to it's price, they think "this is what high fidelity sounds like". The T1 definitely lacks the speed and delicacy of an orthodynamic driver. The only reason it may appear to be more "detailed" than the HE-500 is due to the very high treble peak, which may give off the impression that they are more detailed.
The work and technology put into the T1 doesn't really justify the price. From a technical perspective, it has a lot of flaws that were not reviewed.
I haven't heard the T90, but if they do have more treble than the T1, my ears shudder at the thought.
Edited by elwappo99 - 9/17/13 at 3:00pm