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The Beyerdynamic DT880 Discussion thread - Page 415

post #6211 of 8065
Quote:
Originally Posted by Brooko View Post
 

 

I didn't sell mine because it was too hard to drive - but my experience might help.

 

I started with the 250 ohm Pro.  This was back in the days before I had my LD MKIV.  Sold the Pro, bought the LD, then purchased the 600ohm 880s.  Was very happy with them - either out of my NFB-12 or LD MKIV.  More than enough volume and plenty of dynamics.  Then I got a chance to evaluate the 600s side by side with a pair of 250s.  Differences (if any) were too small between the two - but the 250 could be played straight out of my Studio Anniversary 3 DAP,  So I sold the 600's, repurchased the 250's (Premium this time) - and heavn't looked back since.

 

For pure versatility - I'd go with the 250ohm.  You aren't really losing anything sonically IMO.

yea I agree, although the only reason I have a 600 ohm is cuz I found one on sale, with a balanced recable for like $225... I kinda HAD to buy it since it was selling for half of what it cost the owner... that said that's how I wound up with a slew of balanced amps [I own 3 now] and headphones, as my D2k is going to b recabled and re Balanced [for the THIRD time] this week, and the W1000x is shortly to follow in Febuary 

post #6212 of 8065
I know Dt880 is excellent headphone, but Go Broncos, Go Orange Crush =))
post #6213 of 8065
Quote:
Originally Posted by kramer5150 View Post
 

Hey thanks!!  Yeah I'm in Lurk mode more or less these days.  Still rockin' the tunes though.

 

So how much harder are the 600 ohms to drive (or are they difficult at all with OTL amps)?  I am not a loud music listener mind you, just loud enough to play over the sound of the heater vents and fish tank across the room.  Quiet elevator music is my volume level of choice.  My little Ear Max gets plenty loud with the K701.  Is it powerful enough to drive the 880-600 ?  Heres a pic...

 

 

thanks

 

This circuit was designed to drive the HD650/600 very well.  It is well suited for driving 600ohm beyers...it is the nature of OTL to prefer a high impedance load.

post #6214 of 8065
Quote:
Originally Posted by TrollDragon View Post


Here is a reverse engineered Morgan Jones version from the legendary Chu Moy. biggrin.gif
http://headwize.com/?page_id=433

C-Dawg,
Based on Jonesy's version, the Ear Wax has approx. 26 dB of gain, i.e. High gain for all the 600 Ohm DT lovers.
Quote:
Originally Posted by kramer5150 View Post

Its a fairly low gain circuit.  I am not sure exactly, but its less than my cmoy, millet and Larocco PPA.  All 3 are builds that I know are in the 4-5db vicinity, given the gain resistor values I am using.

If I had to estimate, my EM is in the 2-3db vicinity (4 at the very most).  The amp not gain switchable.  Its just single sided PCB, through holes.  Only a couple components are surface mounted.  So I could easily mod it to bump up the circuit gain, although doing so would reduce the usable travel on the Alps POT... right?  Do certain tubes exhibit more watt output (IE headroom) at higher gains?  if so then this might be a mod worth doing.  Although I am still hesitant, as it might also raise the nose floor.

When I use it with the K701, theres more than sufficient volume.  I get it to clip/distort at around the ~1:30.  For most of my listening I only turn it up to the 9:00-9:30, with 7:00 being full off counter clockwise.

Not sure if this matters, but the output from my modded entech DAC is pretty hot (without actually measuring it).  So given my moderate volume listening habits, my amps serve more as signal attenuators and impedance matching devices... more so than amplifying signal boosters.

Leaning towards the 600 ohm.  I already know it will work fine with the darkvoice 337... that ones got headroom to spare.  its the little EarMax thats more of a concern.

Any tube you should be able to swap in their will have the same or similar gain, probably not enough to make or break the need or lack of gain.
It can be hard to tell how much gain this or that amp has sometimes, as one volume control may track quite differently than another.
Fer example, I just remember that the 336C apparently has a linear pot (a linear volume control).
Which is not good, now that I think about it there is not a huge amount of difference between 10 o'clock and 2 o'clock on the volume control on the 336C.
I usually just tweak it around 9 o'clock as that's where most of it's useful range is.
post #6215 of 8065
Quote:
Originally Posted by kramer5150 View Post

Lets flip this around and ask it the other way....

How many DT880 owners tried and returned or sold off a DT880-600 ohm model... because it was too hard to drive?

What amp did you use it with, and are you a loud volume listener?

thanks!!!

I use either a Matrix M Stage, gain usually set to 18 dB, but 10 dB often works with LOUD material
Or The 336c.......tube OTL amp, tubes, tubes, tubes
Or a FiiO E12 set to 16 dB, the other setting is 0 dB on the E12, that don't work with the 600s.

I think I am a moderate volume listener.

BTW, I agree with the Wild Man, OTL amps are not known for providing a lot of current, they may not be the first choice for a Q701..
Edited by Chris J - 1/19/14 at 3:59pm
post #6216 of 8065
Quote:
Originally Posted by kramer5150 View Post
 

Hey thanks!!  Yeah I'm in Lurk mode more or less these days.  Still rockin' the tunes though.

 

So how much harder are the 600 ohms to drive (or are they difficult at all with OTL amps)?  I am not a loud music listener mind you, just loud enough to play over the sound of the heater vents and fish tank across the room.  Quiet elevator music is my volume level of choice.  My little Ear Max gets plenty loud with the K701.  Is it powerful enough to drive the 880-600 ?  Heres a pic...

 

 

 

thanks

Before it died, I used an Earmax Pro with the DT880/600's.  Sounded great.  You could do loud, but not real loud without distortion.  Given the plain Earmax is less powerful than the Pro, you might be taking a chance.  Right now, I'm using my backup set Eddie Current HD-25/DT880/250's.  Sibilance/distortion with the Eddie Current/600's has me looking for a new amp for the 600's.

post #6217 of 8065
Quote:
Originally Posted by riffer View Post

Before it died, I used an Earmax Pro with the DT880/600's.  Sounded great.  You could do loud, but not real loud without distortion.  Given the plain Earmax is less powerful than the Pro, you might be taking a chance.  Right now, I'm using my backup set Eddie Current HD-25/DT880/250's.  Sibilance/distortion with the Eddie Current/600's has me looking for a new amp for the 600's.

I suspect the Ear Max will not have too much trouble with 600 Ohm 'phones.
Based on the link provided by TrollDragon, that design seems to have more trouble with low impedance cans than with high impedance cans.
post #6218 of 8065
Someone made this in another thread biggrin.gif



I fully agree tongue.gif
post #6219 of 8065

Awesome feedback!!

Sounds like I can go either way then 250 or 600 ohms.

 

Curious, these cans are known to have some treble harshness/grain that folks either love or hate.   Does the even order harmonic content of many OTL amps help or hinder that characteristic?  How much of that treble harsh reputation on HF is the result of bad amp+source synergy?

 

I don't mind using the iTunes EQ for some slight tweeks here and there.  Does anyone use EQ settings to reduce DT-880 treble energy?

post #6220 of 8065
Quote:
Originally Posted by kramer5150 View Post

Awesome feedback!!



Sounds like I can go either way then 250 or 600 ohms.



 



Curious, these cans are known to have some treble harshness/grain that folks either love or hate.   Does the even order harmonic content of many OTL amps help or hinder that characteristic?  How much of that treble harsh reputation on HF is the result of bad amp+source synergy?



 



I don't mind using the iTunes EQ for some slight tweeks here and there.  Does anyone use EQ settings to reduce DT-880 treble energy?


 



For me, I think tubes really complement the sound of the DT880/600. I don't EQ when I use my tube amp.
I suspect you are right, the DT880s "Bad Reputation" is probably due to bad amp + DT880 synergy.

As for Boromir, not even the Elves of Beleriand could craft a more comfortable headphone than the DT880.
Edited by Chris J - 1/21/14 at 9:27am
post #6221 of 8065
+1 to what Chris said. I don't EQ when I'm using my OTL on my dt880 nor t90s. I also didn't feel the need to EQ when I'm running it from my Objective2 but I did when I was using the Magni. I think it is a combination of bad pairings or just not their preference.
post #6222 of 8065
Quote:
Originally Posted by kramer5150 View Post
 

Does anyone use EQ settings to reduce DT-880 treble energy?

 

I use devhen's EQ setting's without the Bass increase to tame the treble.

 

 

Here is the original post.

:beerchug:

post #6223 of 8065

I while running my DT 880 out of my Solid state do not EQ it either :o

 

I've always liked the dt 880s treble HECK I enjoyed the DT 990 for that matter q.q, but a tube does help smooth out the top end. My Schiit Vali did/Does a nice job :3

post #6224 of 8065

I also dont EQ my DT880 premiums 600 running from my NFB15.32., i dont see a need to do it.

post #6225 of 8065
Quote:
Originally Posted by kramer5150 View Post

 Does anyone use EQ settings to reduce DT-880 treble energy?
I don't think the DT880's treble needs "taming". No EQ.

I also don't find Valhalla to be soft or rolled off on top. This combo has realistic timbre and sparkle when the music contains that energy.
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