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The DX90 by iBasso . . . Sound impressions . . . . . . . New Firmware, 2.5.1 . . . - Page 101

post #1501 of 3032
So we are saying that the iems or headphones that you have plugged into the headphone out are fed directly from the dac? When utilizing the 90 as a dac?
post #1502 of 3032
Quote:
Originally Posted by Poimandres View Post

So we are saying that the iems or headphones that you have plugged into the headphone out are fed directly from the dac? When utilizing the 90 as a dac?

You can utilize the DX90 as USB DAC/headphone amp connected to computer or DAC only.

 

There are several outputs on the DX90, which includes Line Out next to the Headphones out.

 

Headphone out has an amp in it's path from the DAC chip.

 

Line Out does not, and therefore the signal is different from having an amp in it's path.  Depending on how transparent the amp section is, the signal could be clean or colored.

post #1503 of 3032
Quote:
Originally Posted by Poimandres View Post

So we are saying that the iems or headphones that you have plugged into the headphone out are fed directly from the dac? When utilizing the 90 as a dac?

 

Don't get yourself confused. It doesn't matter in which mode DX90 is used. As long as there is a load in HO while music is playing, it is burning  in.

post #1504 of 3032
Quote:
Originally Posted by headwhacker View Post

Don't get yourself confused. It doesn't matter in which mode DX90 is used. As long as there is a load in HO while music is playing, it is burning  in.

Your brain needs to burn in also so make sur e when you are burning it in' you are listening to it
post #1505 of 3032
Thread Starter 
Quote:
Originally Posted by Poimandres View Post

Really? Utilizing the dx90 as a dac bypasses the amp? I must be confused.....

Sorry, you are correct. I was thinking of using the USB Dac and then LO. As noted above, if you use the line out, you are bypassing the internal amp and not burning it in, if using the headphone out, then of course you using everything. 


Edited by jamato8 - 6/21/14 at 8:00pm
post #1506 of 3032
Quote:
Originally Posted by meat01 View Post


Your brain needs to burn in also so make sur e when you are burning it in' you are listening to it

Sorry for the off-topic, but I do believe in brain burn-in as I notice it after I go from two contrasting headphones, my brain adjust to the sound.  Cannot say if the circuits are really burning in or not.  But telling people to burn it something in if it's not to their liking is without much ground as it is pretty obvious that there is brain burn-in do exist.

post #1507 of 3032
Quote:
Originally Posted by SilverEars View Post
 

Sorry for the off-topic, but I do believe in brain burn-in as I notice it after I go from two contrasting headphones, my brain adjust to the sound.  Cannot say if the circuits are really burning in or not.  But telling people to burn it something in if it's not to their liking is without much ground as it is pretty obvious that there is brain burn-in do exist.

Totally agree!!

post #1508 of 3032
Quote:
Originally Posted by Dave74 View Post

I've actually been using the Samsung battery from the beginning, when my DX90 came in I did not realize that the battery for the DX90 was behind the invoice inside the cardboard.  I thought that iBasso forgot to ship that battery with it.  The sad part is that I paid over $70 cad  at the Telus store since I was in such a hurry to get a battery so I could try my DX90.  When I went to throw the box out I double checked and noticed there was a little bulge behind the invoice and I had to cut open the cardboard to get the battery out.  

I have been noticing the sound improving in the past week since getting the Pure ii, but this could also be the Pure ii burning in or maybe both. The bass has definitely improved in the past week.  If I had to guess I would think I have around 150-200 hours on the DX90 now.

Dave.

Hi dave! How was the combo now? Is it really pairing good? Soundstage, layering, synergy, etc.?
post #1509 of 3032
Quote:
Originally Posted by jamato8 View Post
 

The Sabre sac of the DX90 also uses an opamp, so I would assume that the sound would improve with the LO also. To be honest, I did not think about this comparison as time when on. Also, with the new OEM Samsung batteries, I find the sound to step up another notch, just showing even more of the potential of the DX90 as the power "source" is improved, which seems to be the case with OEM Samsung batteries. With a cost of under 10 dollars on eBay and free shipping, the battery is a very inexpensive and IMO, worthwhile upgrade over the stock battery. The cost being so low and the returns so very good, makes it an almost free upgrade, again, IMO. :^)

Interesting, exactly what battery do you use? And what is the voltage on that one?

I bought an 4200mAh battery that has 0.1 less volt than the stock battery and it does sound less good...

post #1510 of 3032
Quote:
Originally Posted by Jensenchua View Post
 

Totally agree!!

 

Quote:
Originally Posted by SilverEars View Post
 

Sorry for the off-topic, but I do believe in brain burn-in as I notice it after I go from two contrasting headphones, my brain adjust to the sound.  Cannot say if the circuits are really burning in or not.  But telling people to burn it something in if it's not to their liking is without much ground as it is pretty obvious that there is brain burn-in do exist.


That's short term hearing adjustment that happens with everything and not related to burn in. Usually you'll get some compensation in 10 to 15 minutes as your brain looks for normalcy. There's not great movement available but it definitely exists. Problem is with how you apply this information. Your ear resets and the next time you listen it needs to do it all over again. It's not like your ear or brain remembers between listens. This is just a rationalization for the anti burn in faction. Burn in faction may have some as well but that explanation, especially for those with multiple devices, is just unfounded regarding long term burn in.

post #1511 of 3032
Quote:
Originally Posted by goodvibes View Post
 

 


That's short term hearing adjustment that happens with everything and not related to burn in. Usually you'll get some compensation in 10 to 15 minutes as your brain looks for normalcy. There's not great movement available but it definitely exists. Problem is with how you apply this information. Your ear resets and the next time you listen it needs to do it all over again. It's not like your ear or brain remembers between listens. This is just a rationalization for the anti burn in faction. Burn in faction may have some as well but that explanation, especially for those with multiple devices, is just unfounded regarding long term burn in.

Not short term, if it was then I would have never like my HD650.  It took me a week.  As long as I don't put a contrasting phones in between the same phones I'm using, my brain is adjusted to it.  It took me awhile to get used to bright nature of my CK10.

 

Also, lets not forget perceptional changes your brain go through at different times which has huge affect on how your ears hear.  Your brain will notice the difference mostly when switch one from another especially if there is a striking contrast, but at the same time this contrast can last lot longer than 15min.  The impressions of it can remain longer.


Edited by SilverEars - 6/22/14 at 7:22am
post #1512 of 3032

It is a bit more complicated than I described but as I said, for those with multiple devices, that reasoning is especially unsound. In your scenario, if the adjustment becomes quicker with familiarity with one device, how would you explain someone hearing changes over weeks of time. Your brain just doesn't work that way unless you want to claim it's all placebo but you've already said it isn't.

post #1513 of 3032
Quote:
Originally Posted by zeppu08 View Post

Hi dave! How was the combo now? Is it really pairing good? Soundstage, layering, synergy, etc.?

Hi zeppu08,
I find the DX90LO to Pure ii definitely improves the soundstage and layering. It also has great synergy. I am really enjoying this combo. Synergy also depends on the IEMs you are using with this combo though, but I'm sure this applies with all matches. Out of my IEMs I prefer the Ditas, FX850 and Heaven VI with the DX90 Pure ii combo. IMO:) I do find it is a definite upgrade over the HO.
post #1514 of 3032
So, I needed another battery as my DX90 was constantly dieing on me. I read a bunch of comments in this thread regarding sound improvements from OEM Samsung batteries. Oh no, I was just looking for extended play time and now I am being told of an easy sound improvement mod...

While there are many brands of aftermarket batteries available, there are even more fake Samsung ones. Being in HK, I felt I should be able to locate the OEM battery mentioned as improving the SQ (cell made in Japan). I was amazed by all of the variations between Korea, Japan, China and Vietnam depending on where the cell was made and the battery assembled. Manufacturer dates for these batteries also ranged from mid-2012 (S3 release) to mid-2014.

Anyway, I decided to go with one with cell made in Japan and a mid-2012 date.

For anyone in HK, CityLink has a bunch of these batteries and they will help sort through them to find the one you want. It is also nice that they also offer "City One Care" which is a 6 month warranty on the battery.

Now to see if there is any difference between this and the stock battery (to me)
post #1515 of 3032
Quote:
Originally Posted by Poopie-ears View Post

So, I needed another battery as my DX90 was constantly dieing on me. I read a bunch of comments in this thread regarding sound improvements from OEM Samsung batteries. Oh no, I was just looking for extended play time and now I am being told of an easy sound improvement mod...

While there are many brands of aftermarket batteries available, there are even more fake Samsung ones. Being in HK, I felt I should be able to locate the OEM battery mentioned as improving the SQ (cell made in Japan). I was amazed by all of the variations between Korea, Japan, China and Vietnam depending on where the cell was made and the battery assembled. Manufacturer dates for these batteries also ranged from mid-2012 (S3 release) to mid-2014.

Anyway, I decided to go with one with cell made in Japan and a mid-2012 date.

For anyone in HK, CityLink has a bunch of these batteries and they will help sort through them to find the one you want. It is also nice that they also offer "City One Care" which is a 6 month warranty on the battery.

Now to see if there is any difference between this and the stock battery (to me)

In China I can't find the Made in Japan but mostly is Made in Korea & Assembled in China.....the price rank here for Made in Korea from RMB150-RMB30 so is hard to tell that is original or fake, I guess I gonna travel to HK to get one.

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