My audio set up & connective trail:
16 & 24-Bit WAV lossless files,
Foobar2000 with WASAPI event output,
Oyaide d+ class S USB Type B cable,
iFi micro iUSB purifier,
Furutech Formula 2 USB mini cable,
Meridian Explorer 2 DAC,
Pure silver litz 3.5mm to RCA cable,
Teac A-H01 amplifier,
Modded Beyerdynamic T1 headphones with internal damping.
My amplifier is connected to a custom Nordost Heimdall 2 power cable with a IEGO pure silver IEC & a Furutech rhodium FI-UK plug with a AMR gold plated fuse inside.
What more can I say about these brilliant headphones?
They are engaging, versatile, transparent, musical, fun, involving, encompassing and a great all-rounder.
Just try and listen to them if you have the chance, sumptuous sound and very lightweight and comfortable. It is not clamping on my head nor do the great velour ear pads make my ears and head hot and sweaty. Which is rather forgotten about amongst fellow audiophiles... It doesn't matter how good a headphone is, if they're not comfortable then forget about them.
I don't just listen to them for music but for watching movies on Blu-ray and gaming.
I modded my T1 with the spare foam discs that came with the Beyerdynamic EDT 770V ear pads (tried those grey ear pads but preferred the sound of the original EDT T1V black ones) because there was a bit too much sibilance and bass distortion when playing at loud volume, that got rid of that and made them slightly more warmer and the bass more smoother.
Just to be clear, these are not portable headphones (impedance 600 Ohm, semi-open design, fixed 6.3mm connecter). Nor are they closed-back headphones, they leak a lot of sound and are intended for private listening with a fairly powerful amplifier.
Listen to them if you can, I hope you enjoy them as much as me : )
My headphones:
Beyerdynamic DTX 101 in-ear, DT 990 Premium 600Ohm, T70P and T90,
Philips Fidelio X1 and X2,
Oppo PM-2 custom and PM-3,
Astell and Kern AK T5P,
AKG Q701 modded,
Fostex T50RP mark 3 modded,
Audio Technica ATH-AD900X open-back,
Bang and Olufsen H3 in-ear,
Grado GS1000,
Denon AH-MM400.
Update 1: I just wanted to add that there is more depth and a bigger sound stage without the mod, a bit more clarity and detail but the mod does add a bit more warmth and a more encompassing bass...
I have reverted back to stock because I hope to do a fair comparison with my Grado GS1000 soon.
I recently bought the Beyerdynamic DT 1770 Pro but I think I'm only going to keep open/semi-open back headphones, sound is a living thing.
It needs air to live ; )
Update 2.
I have to be fair to my other reviews so I'll adjust this one.
I have to deduct half a star off the rating as the non-detachable cable is not practical and raises durability concerns. This was a pricey flagship headphone after all.
Also the headband is of the same construction as the original T5, T90 and T70. In time, the metal yokes become loose in the headband and they loose their clicks when making adjustments.
Being more experienced with a lot more headphones, I will review my other earlier reviews also.
I have heard the T1 with more DACs and amps, it is not as bright as the HD 800 and the T90.
The T1 is more balanced than the Grado GS1000 and is a great all rounder.
It's great rival, the Sennheiser HD 800, is very unique in many ways but I find the T1 to be better balanced across the frequencies and more enjoyable to listen too. The T1 is also more versatile with music genres than the HD 800 and it will appeal to more people than the HD 800, I was lucky enough to hear the T1 with the Beyerdynamic A1 amplifier and that is a very good match as many people have said.
The T1 don't have obvious flaws like the HD 800 (pretty bright) and the GS1000 (recessed vocals), it is difficult to fault them from a sound point of view.
I'll finish by saying that these are 1 of the very best dynamic headphones ever made, so if you find one just get it.
They do need a bit of power, they scale up brilliantly and are definitely worth it : )