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post #16 of 27
Thread Starter 

@cel4145 

 

Yeah it sounds like it's really good but it doesn't have a DAC does it? Do you think I need one?

post #17 of 27
I thought you just wanted a headphone amp? I don't think any of the suggestions we have made are a DAC/amp. The FiiO E17 is in your budget range if you want a DAC, too.

Or, you could start with an O2, and then down the road add the matching ODAC if you decided you are ready for a DAC.
post #18 of 27
Thread Starter 

@cel4145

 

Well I guess I'm just asking what headphone amp would fit my specific needs best, so if you think an amp/DAC combo would be best to use with my particular equipment then I'd probably lean towards that. It looks like the E17 can power up to 300 Ohms so that's good, but if I'm correct the Fiio's can't be used while being charged which is a drawback.

 

If you don't think I really need a DAC however, then I'd probably go with either the C&C BH, JDS O2, or Fiio E9.

 

Thanks for your time btw.

post #19 of 27
The O2 is undoubtedly the best amp of all of those. Better in SQ. Better in ability to drive headphones. If you got the O2, eventually you might want to get a DAC because it would bring out the quality of your headphones even more. Depends on whether or not you might want to upgrade in the next year or two (in other words, are you the upgrade type?). If so, I'd start with the O2.

Otherwise, the E17 is very good. I used to have the E17. I was able to use it while charging.
post #20 of 27
Thread Starter 

Alright, I think what I'm going to do for now is just order the headphones and see what they're like when I get them.

 

Hopefully the Xonar DGX will be able to power them to my liking; if not I'll probably order either the C&C BH or the O2 since the card already has a DAC. As far as my guitar amp goes, I think it should be able to power them enough, and I don't think I can really use a DAC with it anyways. My laptop will probably be a different story and need some sort of amp, but it won't be very often I take these open headphones out of my place anyways.

 

Thanks for the advice @cel4145 @manbear and @PurpleAngel:biggrin: 

post #21 of 27
Thread Starter 

Alright so I still haven't ordered the DT-990 Pro's because I keep changing my mind. 

 

The response I got back in the C&C BH thread said apparently it can power op to 300 Ohms, which should be fine for the Pro's.

 

On the other hand, the AKG Q701's are 64 Ohms, so if my Xonar DGX (rated at a max of 150 Ohms) can power those things to their full potential then I wouldn't really need to buy an amp at all, right? If that's the case, it would be the cheaper option. I can get the DT-990 Pro's for $150 but I'd need at least a $100 amp, plus the Xonar for gaming is another $40 - about $300 for the whole shebang. I can get the AKG Q701's for about $220, and with the soundcard that's $260. So I'd only be saving about 40 bucks, which isn't really a decision maker for me, just something to consider.

 

Problem is I've heard two conflicting statements about the Q701's on this board. One person said they're actually harder to drive than the DT-990 250 Ohms, and another said that their Q701's require less power from their amp to get a higher volume than the Pro's, which would make more sense. How am I supposed to know who's right? :blink:

 

Where I really get confused is trying to pair the Pro's with an amp. I've been recommended the C&C BH but I'm worried that it won't be powerful enough despite what I've been told. I was also recommended the O2 but then read the Magni was better and $40 cheaper. Then I read someone talking about these single tube headphone amps for under $100, but I have no idea how much these can actually power.

 

It's pretty obvious I'm getting information overload and it's paralyzing me to the point where I can't make a decision. :confused_face_2: 

post #22 of 27
The AKG Q701 are hard to drive, but not because of their impedance. They definitely need an amp to sound their best.

Ask in the Q701 thread to learn more: http://www.head-fi.org/t/582276/q701-appreciation-thread
post #23 of 27
Quote:
Originally Posted by DoubleFish View Post

 

 

Problem is I've heard two conflicting statements about the Q701's on this board. One person said they're actually harder to drive than the DT-990 250 Ohms, and another said that their Q701's require less power from their amp to get a higher volume than the Pro's, which would make more sense. How am I supposed to know who's right? :blink:

 

Where I really get confused is trying to pair the Pro's with an amp. I've been recommended the C&C BH but I'm worried that it won't be powerful enough despite what I've been told. I was also recommended the O2 but then read the Magni was better and $40 cheaper. Then I read someone talking about these single tube headphone amps for under $100, but I have no idea how much these can actually power.

 


I've had both the Q701 and the DT-990-250, and the Q701 is harder to drive. It took much more on the volume knob of my CMOY. I listened at around 10 or 11 o'clock with the DT990, and 2 or 3 o'clock with the Q701. Additionally, the Q701 killed the batteries more quickly. The Q701 also came close to maxing out my Sony receiver. I was 63/70 on the volume. A more powerful amp like the Magni or O2 would definitely be fine, I don't know about the Asus. I wouldn't be surprised if it was less than ideal. 

Like Cel said, impedance doesn't tell you everything. The Q701 is not very sensitive. 

 

As for Q701 vs. DT-990, they aren't too far apart in general sound quality. In a nutshell, the DT-990 has the advantage of more bass heft, while the Q701 gets you a really huge soundstage and a better midrange. They are both fairly detailed and on the bright side. I compared them in more detail here http://www.head-fi.org/t/656626/q701-vs-dt990-250-pro-review

Read this review for Magni vs. O2: http://www.head-fi.org/t/642401/comparison-and-review-magni-modi-vs-o2-odac


Edited by manbear - 11/11/13 at 10:06pm
post #24 of 27
Thread Starter 

UPDATE:

 

Just got my headphones today, and holy !@#$ they are awesome. The first thing I did was put them on; they really did feel like a cloud on my head as others have claimed. Compared to the closed pleather headphones and IEM's I've been using my whole life, these things are night and day for comfort.

 

I was also extremely surprised at how well my phone can drive these things. With all the talk on here about "absolutely needing an amp for the 250 Ohm DT's", I was shocked. My smartphone outputs enough juice to listen to these things at an enjoyable volume level (they still thump).

 

I'd also like to clear up another myth I've been reading on this forum: Amping these headphones with an ASUS Xonar DG(X) is plenty enough. I really don't need an extra amp like I thought I did (too late it's already shipped). At first music sounded amazing, but gaming left a bit desired. That's when I stumbled upon the amp output options and switched the DG to high output. What a difference. These cans BANG on the DG. I could turn it up way past a safe volume level for my hearing if I wanted to. The sound quality is the best I've ever heard; the bass hits hard, everything else is clear and tight, and the soundstage (especially with Dolby Headphone) for gaming is great.

 

Anyways, overall I'm very happy with the purchase and I hope this clears a lot up for anyone else considering the DT-990 Pro and ASUS Xonar DG(X) combo.

post #25 of 27
Glad you're pleased! Bummer about the amp though. What amp did you end up ordering?
post #26 of 27
Quote:
Originally Posted by DoubleFish View Post

UPDATE:

Just got my headphones today, and holy !@#$ they are awesome. The first thing I did was put them on; they really did feel like a cloud on my head as others have claimed. Compared to the closed pleather headphones and IEM's I've been using my whole life, these things are night and day for comfort.

I was also extremely surprised at how well my phone can drive these things. With all the talk on here about "absolutely needing an amp for the 250 Ohm DT's", I was shocked. My smartphone outputs enough juice to listen to these things at an enjoyable volume level (they still thump).

I'd also like to clear up another myth I've been reading on this forum: Amping these headphones with an ASUS Xonar DG(X) is plenty enough. I really don't need an extra amp like I thought I did (too late it's already shipped). At first music sounded amazing, but gaming left a bit desired. That's when I stumbled upon the amp output options and switched the DG to high output. What a difference. These cans BANG on the DG. I could turn it up way past a safe volume level for my hearing if I wanted to. The sound quality is the best I've ever heard; the bass hits hard, everything else is clear and tight, and the soundstage (especially with Dolby Headphone) for gaming is great.

Good to hear that the DG can drive them loud enough for you.

Keep in mind that what you are describing as a myth is actually Asus's own ratings for the DG/DGX that they are suitable for headphones in the range 32-150 Ω. Be interesting to see if the amp you ordered improves on the audio quality or not.
post #27 of 27
Thread Starter 

@manbear 

 

I ended up ordering the C&C BH over the O2 / Magni etc for the portability and battery life. I figured it would at least output enough juice combined with the DG to drive the DT's. Obviously as I said before now I know I don't even need to combine them, but in retrospect I'm actually still happy I'm getting it so I can listen to these headphones properly with my phone / laptop.

 

I also plan on getting a pair of M50's or some nice IEM's eventually for isolated use, so I can always use the BH with those too even though I probably won't have to.

 

@cel4145 

 

Yeah you're right I guess it's not really a myth but I just wanted to clear it up for anyone that finds this thread with the same questions I had. And yeah, I still haven't counted out the BH against the DG for SQ, maybe it will be better,  but either way I'm happy with the SQ I have now regardless.

 

Thanks again for the help guys.

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