Amusing review  

Not to flood your review thread here, but you do need to sort out your front end.
 
I understand that presently you are mid or low level analogue outputting from a windows laptop.
 
I hope I am wrong, and you are in fact line level outputting from your USB DAC into the O2 amp.
 
If you are in fact using the analogue output (read:headphone jack) you are robbing the potential performance in a few ways, a) the software mixer in windows, b) the electrical performance of the headphone jack, and c) I will leave for others to contribute, but I really hope you are using the aforementioned USB DAC out and running external amplification...
 
all the same, for critical listening to flagship headphones, please go lossless compression files you are familiar with. I am all for low bitrate internet streaming for having new stuff to listen too, but for reviews you gotta give the equipment its best chance to shine. IE critical setup for discrimination/critical listening.
 
by all means; let people know how the varying flagships handle low bitrate sound (whether they, like studio kit, make it 'unlistenable', or whether they gloss over the deficiencies of the source file, but this should only be a part of the "big picture", and you should inform the general audience your listening choices, as, this helps inform the readers of why you may come to your conclusions or had specific issues etc
 
I hope these words contribute and help in some way

c) was to state that amping after software mixing/outputting a low-mid volume, will actually amplify a 'compressed sound', that dynamics will be gone, and a few of the things you wrote about in your review will rear their ugly heads.
 
PS I don't believe that was the same method you were using when auditioning the other flagships

Disagree with most of this 'review'.
 
- An upgraded 840?  not even close.
- The bass is boomy?  no.
- Lots of talk about distortion, yet I don't see any measurements you made? 
 
This reads more like a rant.  You may legitimately dislike this headphone and its price, but this sounds like buyers remorse anger.  I understand we all hear things differently, but comparing this to an 840 and then saying "boomy bass"....you can't be serious.

It’s not good for head-fi.org’s reputation when they let someone without enough knowledge and just for ingratiates leaves this kind of ridicules review.

I love a good shot of nerd-rage asmuch as the next guy, but seriously? Something is very wrong with either the review, the reviewer or his setup.

His setup is ridiculously wrong but he must also have hearing issues based on what he wrote on his profile:
 
"I primarily use my laptop headphone jack. I also have an objective 2 amp that doesn't seem to make a difference"

just doesn't have an awareness of what to look for in terms of differences, believes its all about volume.
 
and low bitrate internet radio feeds of complex music genres, so hasn't actually heard any of the equipment 'perform' shall we say.
 
not hearing 'any difference' shows us justhow far from optimal things are.
 
not hearing the death of sound that pushing out half volume (or less) from laptop and then amplifying that... Back to the same volume,... Arrrgh!

Time line looks all wrong to me as well. Unless I'm mistaken he started griping about the sale on the T1s before a review was even mentioned. If so, this is just pointless axe grinding.
 
The spurts of angry denial also look mighty suspicious to me, frankly.
 
It's funny how the T1s seem to breed persistent haters. I suspect that they might be right, and there's a quality control issue. Otherwise, how would one explain the few guys who insist that the T1s will leave you with bleeding eardrums and a shattered soul from the horrifying brightness?
 
There's this guy at r/headphones... whose spelling is suspiciously similar to ag8908's spelling...

Yeah,....mostly incorrect. Both spelling and grammar! 

This review is a total waste of time and comes across as sour grapes to do with the pricing and not getting a good deal.
 
The T1's are stunning headphones when driven correctly.

I agree with this fair review ,this is the most important part : unacceptable distortion, erratic highs.

real review. agree for what did you say .

It's not the headphones that sound bad, it's your system that's at fault. You are not fairly reviewing these headphones because your system to power them is woefully insufficient. The O2 flat out doesn't have enough power or current for a 600 ohm headphone and your DAC is bad quality for the T1. That's why you are experiencing harshness and distortion. It's like putting cheap economy tires and poor quality gasoline in a Ferrari and then complaining that it doesn't perform well. Your system is woefully unsuitable for the T1s. If you want the T1s, or frankly any summit headphone to sing I suggest a better DAC like the HRT Music Streamer HD or Schiit Bifrost Uber, and a much better amp like the Woo Audio WA6 or WA3, or the SPL Auditor or Violectric V200. 

It's the Beyerpeak – I also cannot live (hear) with it. I just wonder why they have also built it in there top-of-the-line headphone???

Thanks for the review .

Stumbled on this review, and honestly I think it is a pretty good "review". It's succinct but still gives lots of information. There's no fluff, so I'm not sure how people are criticizing it from a "review" stand point.
 
 
As for the content, well I agree with you. Unfortunately, many people still think it's a good headphone because it's a "flagship" or has a "high MSRP". But as far as comparing it to other headphones, I think the T1 is very flawed and not worth it's asking price. It really doesn't compare to the flagship headphones such as the LCD-2, HD800, HE-6, etc. It just doesn't have the SQ that can get above "mid-fi".

Booming bass??? What?

"This Ferrari 458 sucks,  it's so unstable, handling is horrible, it's very uncomfortable, it doesn't  brake at all, I touch the throttle and it just spins and becomes uncontrollable. Sure I'm driving it on a really bumpy road covered in snow and ice, with semi-slick track tires on it, but who cares, this car sucks".  
 
-That's your review basically.

The fact that people think O2 could ever show them how a high end headphone sounds proves how gullible people are when it comes to audio equipment. I mean this O2 has become the most overrated product in this community, when in fact, it's worthless, it's an amp yes, but it sounds no better than an output on an average smartphone or a laptop.