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Fiio E07k Enough to Power the 250 ohm DT 990 Pro? DT990 or AKG 550?

post #1 of 11
Thread Starter 

Hi All,

 

My question is two fold. I've got the E07k and am really tempted to pick up a pair of DT990's as they're down to $142 on Amazon. I like to listen to music relatively loud and I'm worried my little Fiio won't have the guts to power these guys. Your thoughts?

 

Other question. I listen to all genres of music from Mozart to Deadmau5 to Mac Miller and everything in between. I'm totally and completely torn between the DT 990 and the AKG K550.

 

I know the AKG's are significantly lower Ohm than the DT 990 and that they'd be fine with the Fiio. That's not a concern.

 

The DT990 are $142 and the AKG's are $190. I have no preference of open or closed cans. This would be my first real step up from my Pro DJ100's. I do prefer a richer, fuller sound. I like bass but am by no means a basshead.

 

Your thoughts and suggestions would be greatly appreciated.

post #2 of 11

I agree, the E07K should have no problem driving the K550 at all. I think it would drive the DT990 but most likely not very well. If you were to go with the DT990 an amp would definitely be a major improvement in performance. Both are pretty highly regarded headphones. If you don't want to spend any more money on an amp, I would go with the K550. Most likely your going to have to spend around $100 for a decent amp for the DT990. But your going to pay $50 more for the k550. You could go with the E09k amp but that is going to cost $109. So if you go with the DT990 with an amp your going to spend $251 instead of $190 for the K550.


Edited by Spiral Out - 3/2/14 at 5:43pm
post #3 of 11
Thread Starter 

Good lookin out! Solid response. That's kinda the conclusion I was coming to but I needed to hear it from someone else. Darn, I just got the E07K too lol. 

 

Just pulled out my old Porta Pros and plugged it into the E07k and wow, I'm blown away. Can't believe the sound I'm getting. 

post #4 of 11

Awesome! I'm glad I could help! One of the good things about the E07K is you can always upgrade it later with the E09K if you need more power. Honestly, like I said before, you couldn't go wrong with either headphone. The only thing that would be majorly different would be the the K550 are closed cans and the DT990 are open. If your going to use the headphones outside the house the k550 would absolutely be the one to get. The DT990 will have a more open sound but would be limited to home use. 

post #5 of 11
Quote:
Originally Posted by Sandman77 View Post
 

Hi All,

 

My question is two fold. I've got the E07k and am really tempted to pick up a pair of DT990's as they're down to $142 on Amazon. I like to listen to music relatively loud and I'm worried my little Fiio won't have the guts to power these guys. Your thoughts?

 

Other question. I listen to all genres of music from Mozart to Deadmau5 to Mac Miller and everything in between. I'm totally and completely torn between the DT 990 and the AKG K550.

 

I know the AKG's are significantly lower Ohm than the DT 990 and that they'd be fine with the Fiio. That's not a concern.

 

The DT990 are $142 and the AKG's are $190. I have no preference of open or closed cans. This would be my first real step up from my Pro DJ100's. I do prefer a richer, fuller sound. I like bass but am by no means a basshead.

 

Your thoughts and suggestions would be greatly appreciated.


E07K can drive DT990 250 Ohm very well.

Gain: 6dB

Volume: between 20 and 35 with most recordings.

 

DT990s are definitely bright headphones, so listening at very high volume can be unpleasant with some recordings.
In my opinion, only the best recordings out there make this headphones really shine, specially those magnificent audiophile classical recordings with only a few instruments.

post #6 of 11
Quote:
 E07K can drive DT990 250 Ohm very well

 

The E07K outputs 36 mW into 300 ohms. It would drive a 250 ohm headphone with decent sensitivity. A desktop amp would be a major improvement in performance.  The E07K seems to have been designed for low resistance loads. In the thread starters case, when choosing between a 250 ohm and 32 ohm headphone, the 32 ohm would be a much better match for his E07K.

post #7 of 11
Quote:
Originally Posted by Spiral Out View Post
 

 

In the thread starters case, when choosing between a 250 ohm and 32 ohm headphone, the 32 ohm would be a much better match for his E07K.

I disagree. Since E07K can drive a better headphone (250 Ohm version) I don't see the need of suggesting a worse one that need 7 times less power that the one that E07K can provide.

 

Do you own Fiio E07K and DT990 250 Ohm version?

 

DT990s and DT880s (both 250 Ohm versions) are similar loads.
Based on Innerfidelity DT880 measurements, they need 0,38mW to reach 90dB SPL. This means that 24mW would be enough to make them reach 108dB.

As I've said, in real life, using Fiio E07K with gain settings at 6dB and its volume around half its maximum, DT990 and DT880 sound pretty loud with the vast majority of recordings; louder is not healthy.

 

I'm not saying that you can not get a little bit of improvement pairing DT990s or DT880s (250 Ohm versions) with a more refined headphone amplifier, but refinement aside, E07K has enough power to drive DT990 250 Ohm versions.

 

Thus, nothing make me think that 32 Ohm version is a better pick here (being more expensive + most people tend to agree that this version is not as good sounding as 250Ohm and 600Ohm versions)

 

More so, I've heard some knowledgeable head-fiers saying that Fiio E09K is by no means a major improvement over E17/E07K for 250 versions.

post #8 of 11

I was not talking about the 32 ohm version of the DT990. The K550 was the 32ohm headphone I was referring to.

 

Listen, I don't own the E07K. My opinion is based on the spec. If you own the combo then you would have a much better perspective then I would. But spec wise, 36 mW is not very much power. Loudness is not the only determining factor when it comes to sound quality.

 

Given the posters two choices, the K550 would work far better with his current amp/dac.

post #9 of 11
Quote:
Originally Posted by Spiral Out View Post
 

I was not talking about the 32 ohm version of the DT990. The K550 was the 32ohm headphone I was referring to.

My bad!

 

I think the right choice is down to preference. I haven't heard K550, based on frequency response measurements DT990s seem to have more mid bass, and more treble. Being open back headphones, 990s don't provide any isolation but probably have bigger 'soundstage' in comparison with the closed back K550. Both seem to be solid picks.

SoundMagic HP-100 is also a solid pick, probably less bright than both DT990 and K550.

 

K550s are great looking headphones.

 

You can't go wrong with any of this headphones but if you pick a bright one feed them with high quality recordings.

 

Enjoy :beyersmile:

post #10 of 11
Thread Starter 

Phew! Is it hot in here? Lol! Guys, thank you so much for your thoughts and opinions it's appreciated.

 

So, here's what happened. I ran across reviews for the PSB M4U1 and was blown away with the consistent thoughts and opinions on them. Happened to find a guy on Amazon who was selling a "like new" pair for $200. I took the plunge and just place my order. I'm super excited. I feel I got the best of everything here and at a steel of a price. And they're 32 Ohm so no worries there.

 

Thanks again, and I'll post my thoughts once received.

post #11 of 11

There you go! Those look like nice headphones. They should work out well for you. :)

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