Beyerdynamic T90 Discussion and Support Thread

[jeff7742]

 
Can you provide details on what kind of corrections you have made.

 
Just EQ. I am finding that the main fault of the dt990 is the recessed midrange. When I boost the upper midrange from about 622hz to 7khz, the sound really improves. My whole EQ is skewed slightly upward from bottom to top, maybe 3db on foobar EQ. I find this setup preferable to the T90. The soundstage is wider, and it's more comfortable. Seems just about as detailed as the T90. Here's the foobar EQ image I'm using (not perfected yet):
 

 

[biosailor]

The parcel with my modded T90 from FORZA Audioworks arrived today, but I wasn't at home so I'll pick the headphones up at the post office tomorrow. I am really curious how they sound. Did a bit of upgrading of my audio chain. I was fed up to tie down my Mac Book Pro for feeding my music files into the DAC. So I drove to a dealer and picked a demo Aurender N100H streamer to give it a try. I must say that I am stunned with the results achieved. Tested the audio chain with both, my Sennheiser HD800 and my Grados GH1. The Aurender produces an incredibly smooth and rich SQ that is a lot more better than feeding my files via my Mac Book Pro into the DAC. Now THAT makes me really curious to see how the T90s in balanced mode react to my upgraded audio chain. The Aurender will definitely be a beautiful Xmas gift. I have to drop them at the dealer to make some changes with regards to the hard disk. They said it is upgradable to 4 TB, which I'll ask them to do.
 
Sorry if I drifted from the topic, but I am convinced that the Aurender gives an extra boost to my modded T90s.
 
I'll keep you posted.

 

[biosailor]

Picked up Forza Audioworks' parcel at the post office. The parcel looked smallish and I wondered if Matt 'flattened' the T90s 

 The parcel contained the cables for the headphones, while the T90s are still somewhere between Poland and Switzerland. The cables look really neat. Will try them out with my HD800s. Will send more pics when the T90s arrive.
 

 
 

 

[EnthusiastNr8]

Hi Guys! 
 
I am new to this Forum because mainly, I want to discuss my next buy.
 
I come from Austria so prices are here a little different than in the US.
 
- The price for the T90 is about 385,- 
- The other contestants are HD700 (415,-) and the HE 400S (370,-)
- I wanted to also include the Grado SR325e wich retails for about 360,-
 
Because the Hifiman are so expensive here I wanted to know if they are in about the same league (soundwise) of the T90?
 
I listen mostly to classic, jazz, instrumental rock/metal, and really nothing bass heavy so bass is not really important.
 
I want a natural analythic sound. 
 
I know, "go listen to them and see what is your favourite" but in Austria there are no shops where i can hear them 
and I dont have the budget to buy all 3 from amazon.
 
Just that you know, I listened to the HD600, Fidelio X2 and Beyerdynamic DT990 and I liked the X2 most,
but the bass was still to heavy, from a normal Contrabass in an orchestra my ears vibrated. 
 
I want at the beginning to play from my HTC M8 Mobile with FLAC Files, but later on I want to get an 
AMP (integrated or Headphone? but this is for an other Thread.)
 
So what do you say guys, what do you think is the way to go?
 
All the best and thanks for the advice!
 
Jakob

 

[HOLLOWCOW]

HI GUYS!
So I finally got the CRACK+SB amp and the MODI MULTIBIT combo to pair with my T90's.
 
It is a solid upgrade over the JDS Element (same components as O2+DAC combo).
the sound is better and more alive than the JDS,
however with the stock tubes I still find the treble too fatigue, and the sound to be a little digital and too much clarity. 
I'm a total noob to tube amps. I had someone assemble it for me. I don't know how to take care of it and how to handle it.
I understand the Crack have two types of tubes. the big one is the sound signature and the small one is the power, is this right?
 
 
MY QUESTION IS:
I'm looking for a new set of tubes to give it a more "tuby" "lush/warm" sound with nice roll-off to the trebles.
the bass can also be improved. (maybe less in your face and more slow like sennheiser bass. maximum budget of 300$. preferably less.
 
 
 
I would really appreciate your recommendation based on your personal experience with this setup.
I would also be really greatfull if you can provide a link to eBay or something. as all the parameters and brands are very unclear to me.
I could easily buy something else.
THANK YOU!

 

[Wilashort]

Yes, is a very difficult decision, because my modded DT990 have been with me since 2008 (and have suffer various transformations (different drivers and earpads)), and i like the case that come with the T90, and the T90 are very beautifull too. But the reason for selling, is that i have too many headphones (5 in total + 1 damaged in the conector). I want to have 3 for main use in the week, and the earbud that i have for use in the smarphone. My DT990 with T90 earpads have a very nice sound with very good subbass and a more 3D soundstage.
The decisions are difficult (i Like my other headphones much for that them are).
 
Quote:

   
I wouldn't. I find the dt990, when EQ'd properly, to be a little better than the T90. The trick is getting the midrange boosted right. The dt990 by nature has a recessed midrange. When its upper midrange is boosted right, it equals or surpasses the T90.

 

[SHAMuuu]

 

Your modded 990 is with t90 drivers and pads? This is what gives you 3d soundstage?

 

[Wilashort]

Drivers, yes. Earpads was before, but now they have K701 earpads. The soundstage was more 3D like with Beyer T90 earpads. But i like the extra airyness and a little more engagement that K701 earpads give to the sound. The sound with the T90 earpads was very alike to my shures (for that reason i decided to put the K701 earpads; to experiment, and it give a little different sound)
Quote:

 
Your modded 990 is with t90 drivers and pads? This is what gives you 3d soundstage?

 

[-Darkstar-]

  HI GUYS!
So I finally got the CRACK+SB amp and the MODI MULTIBIT combo to pair with my T90's.
 
It is a solid upgrade over the JDS Element (same components as O2+DAC combo).
the sound is better and more alive than the JDS,
however with the stock tubes I still find the treble too fatigue, and the sound to be a little digital and too much clarity. 
I'm a total noob to tube amps. I had someone assemble it for me. I don't know how to take care of it and how to handle it.
I understand the Crack have two types of tubes. the big one is the sound signature and the small one is the power, is this right?
 
 
MY QUESTION IS:
I'm looking for a new set of tubes to give it a more "tuby" "lush/warm" sound with nice roll-off to the trebles.
the bass can also be improved. (maybe less in your face and more slow like sennheiser bass. maximum budget of 300$. preferably less.
 
 
 
I would really appreciate your recommendation based on your personal experience with this setup.
I would also be really greatfull if you can provide a link to eBay or something. as all the parameters and brands are very unclear to me.
I could easily buy something else.
THANK YOU!

 
Looks like you have a 12AU7 and a 6080. I like Mullard 12au7's the best. Not the new ones made by New Sensor but New Old Stock or more commonly referred to as NOS. These tubes were made quite a while ago but haven't been used. I don't really have much experience with the 6080, maybe a NOS Tung Sol. You might check the Bottlehead  Crack thread on this board, they would have better suggestions for that tube. Good luck.

 

[fritobugger]

  Hi Guys! 
 
I am new to this Forum because mainly, I want to discuss my next buy.
 
I come from Austria so prices are here a little different than in the US.
 
- The price for the T90 is about 385,- 
- The other contestants are HD700 (415,-) and the HE 400S (370,-)
- I wanted to also include the Grado SR325e wich retails for about 360,-
 
Because the Hifiman are so expensive here I wanted to know if they are in about the same league (soundwise) of the T90?
 
I listen mostly to classic, jazz, instrumental rock/metal, and really nothing bass heavy so bass is not really important.
 
I want a natural analythic sound. 
 
I know, "go listen to them and see what is your favourite" but in Austria there are no shops where i can hear them 
and I dont have the budget to buy all 3 from amazon.
 
Just that you know, I listened to the HD600, Fidelio X2 and Beyerdynamic DT990 and I liked the X2 most,
but the bass was still to heavy, from a normal Contrabass in an orchestra my ears vibrated. 
 
I want at the beginning to play from my HTC M8 Mobile with FLAC Files, but later on I want to get an 
AMP (integrated or Headphone? but this is for an other Thread.)
 
So what do you say guys, what do you think is the way to go?
 
All the best and thanks for the advice!
 
Jakob

 
The 400S is not in the same league as the T90 but the 400i would be.  Unfortunately the 400i but even more so the HD700 and T90 will really want an amp.  If you are considering Grado seriously then look at the SR225e instead of the SR325e since they sound almost identical.  For me the HD600 is sort of boring and lifeless even while it is nicely balanced.  See if you can find a deal on the HE-400i or save up for the T90 and an amp.  How do you listen the HD600 without an amp?

 

[JohnBal]

  HI GUYS!
So I finally got the CRACK+SB amp and the MODI MULTIBIT combo to pair with my T90's.
 
It is a solid upgrade over the JDS Element (same components as O2+DAC combo).
the sound is better and more alive than the JDS,
however with the stock tubes I still find the treble too fatigue, and the sound to be a little digital and too much clarity. 
I'm a total noob to tube amps. I had someone assemble it for me. I don't know how to take care of it and how to handle it.
I understand the Crack have two types of tubes. the big one is the sound signature and the small one is the power, is this right?
 
 
MY QUESTION IS:
I'm looking for a new set of tubes to give it a more "tuby" "lush/warm" sound with nice roll-off to the trebles.
the bass can also be improved. (maybe less in your face and more slow like sennheiser bass. maximum budget of 300$. preferably less.
 
 
 
I would really appreciate your recommendation based on your personal experience with this setup.
I would also be really greatfull if you can provide a link to eBay or something. as all the parameters and brands are very unclear to me.
I could easily buy something else.
THANK YOU!

Hi,
There is a thread you can check to get some answers:  http://www.head-fi.org/t/476650/crack-bottlehead-otl
The crack is an OTL amp, which means there is no output transformer so the sound you hear is produced directly from the power tube, which is the big tube in this amp. So I think the larger tube will make more of a difference in the sound you hear. The RCA 6as7 has been said to sound warm and tubey. 
The smaller tube, the 12au7 are very plentiful from various sources and come in several prices and sound signatures, so experiment and have fun!

 

[casper3127]

Hi Guys! 
 
I am new to this Forum because mainly, I want to discuss my next buy.
 
I come from Austria so prices are here a little different than in the US.
 
- The price for the T90 is about 385,- 
- The other contestants are HD700 (415,-) and the HE 400S (370,-)
- I wanted to also include the Grado SR325e wich retails for about 360,-
 
Because the Hifiman are so expensive here I wanted to know if they are in about the same league (soundwise) of the T90?
 
I listen mostly to classic, jazz, instrumental rock/metal, and really nothing bass heavy so bass is not really important.
 
I want a natural analythic sound. 
 
I know, "go listen to them and see what is your favourite" but in Austria there are no shops where i can hear them 
and I dont have the budget to buy all 3 from amazon.
 
Just that you know, I listened to the HD600, Fidelio X2 and Beyerdynamic DT990 and I liked the X2 most,
but the bass was still to heavy, from a normal Contrabass in an orchestra my ears vibrated. 
 
I want at the beginning to play from my HTC M8 Mobile with FLAC Files, but later on I want to get an 
AMP (integrated or Headphone? but this is for an other Thread.)
 
So what do you say guys, what do you think is the way to go?
 
All the best and thanks for the advice!
 
Jakob

You've got a pristine pair of "second-ear" he400is in Spain for 250€+shipping. They're really nice for Jazz and not that depending on an amp to sound fairly good. An Xduoo XD05 could do for you the damage if you then need an amp/dac to feed them properly!

https://www.auriculares-hifi.com/foro/index.php?topic=8048.0

Enviado desde mi LG-H815

 

[EnthusiastNr8]

Original Post by fritobugger
 
 The 400S is not in the same league as the T90 but the 400i would be.  Unfortunately the 400i but even more so the HD700 and T90 will really want an amp.  If you are considering Grado seriously then look at the SR225e instead of the SR325e since they sound almost identical.  For me the HD600 is sort of boring and lifeless even while it is nicely balanced.  See if you can find a deal on the HE-400i or save up for the T90 and an amp.  How do you listen the HD600 without an amp?

 
The HE 400i is 580,- here, and the second hand business is not really there. I also want new ones ^^ My phone drove the HD600 but not really well, they were quite quiet I then plugged them into the integrated AMP from my parents and felt they are quite boring but clear and balanced as you say. So the HD700 and the T90 are still in the race. Seems like I need an AMP quite fast.
From what I read the T90 are more likely to be my pick, and through the "Tesla Technology" they are said to be "driveable" on a mobile. Just until I have my hands on an AMP.
Also that they come from germany and should quality wise be above the HD700 is a pro, but the non detachable cable is a con. I also like the T90 look better 

 
Thanks for the Help and have a nice day!

 

[SHAMuuu]

 

Very insightful and interesting experimenting there. Thanks for the info good sir

 

[SHAMuuu]

   
The 400S is not in the same league as the T90 but the 400i would be.  Unfortunately the 400i but even more so the HD700 and T90 will really want an amp.  If you are considering Grado seriously then look at the SR225e instead of the SR325e since they sound almost identical.  For me the HD600 is sort of boring and lifeless even while it is nicely balanced.  See if you can find a deal on the HE-400i or save up for the T90 and an amp.  How do you listen the HD600 without an amp?

Are you saying the 400s is not in the same league as in the t90>400s overall or the other way around.