[ib1dance]

Hi,
 
Are there any D.A.P's that can sufficiently power the  beyerdynamic DT1990 headphones? (250 ohms). i.e- without the need of a extra amp. 
 
Headphone Specifications:
 
Nominal impedance 250 Ω
Nominal SPL102 dB SPL (1 mW / 500 Hz)
Max. SPL125 dB SPL (200 mW / 500 Hz)
T.H.D.< 0.05% (1 mW / 500 Hz)
 
Thanks

 

[BartSimpson1976]

I have the Cayin i5 and recently tried the DT1990Pro. The i5 has no problems with it, I was at Volume level 50 out of 100 at high gain.
 
And by the way these two pair greatly together from the sound point of view. 

 

[ib1dance]

Thanks for the info. In that case the FiiO X5 ii should have sufficient power as it has a rated 245 mW at 32Ω http://www.fiio.net/en/products/41/comparisons whilst according to this site http://penonaudio.com/Cayin-I5 the Cayin i5  has 190mW+190mW at 32Ω.
 
Though since some believe that music (production not perception)  is subjective I could just plug the headphones into a Orange and hear where that gets me .
 
http://chemistry.about.com/od/chemistryhowtoguide/a/fruitbattery.htm

 

[BartSimpson1976]

actually the i5 has impressive 400mW. The 190mW come from a different measurement method they used.
If the standard method is used the result is around 400mW. But please do not ask me for the technical details of these methods.. 

 

[ib1dance]

i5 Specs sheet - http://en.cayin.cn/products_info?itemid=87
 
Cayin i5  has 190mW+190mW at 32Ω ( click on the parameters tab)

 

[ib1dance]

The D.A.P doesn’t have to be capable of "High resolution" as their is no evidence that high resolution audio is perceptionally a "higher quality" experience for humans. Maybe it's placebo Audio that sells products. https://youarenotsosmart.com/
 
Just a D.A.P that has  low distortion and sufficient headphone output for the DT1990's.

 

[BartSimpson1976]

 
Cayin i5  has 190mW+190mW at 32Ω ( click on the parameters tab)

 
I know their spec sheet. And I own an i5.
 
But -while not technically wrong- it is not comparable as they measured differently.

 

[ib1dance]

Ok. I wasn't specifically refuting your claim as you didn't provide anything to backup your claim, you maybe correct,you maybe wrong,you maybe whatever. But in general ,non-scientifically trained people  can, and do, believe whatever they want about anything and everything they want. Which is fun, until it's the facts you need to understand if electronic device X can power electronic device Z. That's why I posted a question on here. I'm not a pro when it comes to electronics (I'm semi-pro biologist) . A electronics pro will have the right understanding to give me professional advice. A professional sale-person may just try to sell me stuff and fudge the information.
 
It's difficult on these forums to tell the genuinely well learned techno geeks from the audio faithful and sales people.
 
 
 
 

 

[BartSimpson1976]

well, whatever... But I can assure you the i5 can drive the DT1990Pro more than sufficiently!
 
German audio bloggers measured 400mW at 30Ohm and 4.65 Vrms from HO and 1.2 Vrms from LO.

 

[AudioNerd42]

The DT 1990 Pro is fairly efficient. Don't let the 250 ohms fool you. I use an iBasso DX90 and it pairs up beautifully.