drsheep said:

So far I haven't noticed any changes after listening to it for a while.  BTW, the DX90 sounds like a more refine version of the AudioQuest DragonFly, which also uses an unspecified version of the ESS Sabre DAC.

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drgajet said:

some of my files on the sd card will have artist folder, album folder but then no songs so the dx90 doesn't have anything to play. When I use mp3 tag there are no tags for those folders. How do I get tags if mp3tag cant find them? The tags are on the computer and play fine from there just not on the dx90.

Jim

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poimandres said:

If you are talking rev 1 or 1.1 dfly I thought it was known to run a 9023.

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burningv said:

  Does anyone know if there's a battery charger that can charge the Anker 4400 mah battery? I'd like to have one more of those bad boys and swap whenever one runs out of juice. 

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nirmalanow said:

 
I just heard back from the seller and they will replace my unit. I need to send back my defective one to their location in Virginia.

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kojaku said:

  Hm...I got mine from them...No charger. Anyway, I just got this interesting e-mail from Ibasso:
 

 
Kojaku

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solude said:

Problem is they said that 10 days ago too

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mauriciolguin said:

I have tested the HE-500 driven just by the DX90. I don’t remember if was Jamato who said an statement similar to that what I’m gonna say.

The HE-500 sounds good just driven by the DX90, mind you, sounds better when they’re amplified with the emotiva mini. By the way my HE-500 didn’t come with a plug 3.5 and an adaptor 6.35, it came with a plug 6.35 so I had to buy an adaptor.

I also have been listening the DX90 with the Etymotic 4PT and with the Westone 4r. I like more the combination of the Etys with the DX90. The Weston sounds really good but I prefer the sound of the Etys.

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drsheep said:

  I think they forgot to pack yours, as the charger is just in the USPS bag and not part of the official packaging.  Here is everything that I got from ProStudio:
 

 

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headwhacker said:

 

silverears said:

  mW is power input.  V is voltage input.  Power depends on two of the three variables(V,I,R), and then there is only voltage dependency for sensitivity.  One maybe more efficient than the other, but not necessarily more sensitive while at it.  

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Ok this is becoming a sound science topic but is a very basic one. V, I, R are all involve but you only need to get 2 values of any combination of the 3 to compute for power. These are not absolute values because there are other factors involve (e.g. cuurent limiter circuit etc) but the headphone sensitivity/efficient spec are nominal values and they are good enough as a general guide.

To make things simple:

96dbSPL/mW headphone definitely will play louder than a 97 dbSPL/V all things equal. If you don't agree the best thing to prove it is get the 2 exact headphones in question K545 and DT880 and see which one sounds louder.

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zeppu08 said:

Hi guys! Just wanted to ask, how long does your dx90 battery last per full charge? Thanks!

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