Head-Fi.org › Forums › Equipment Forums › Portable Source Gear › The iBasso DX50 Thread - Latest firmware: 1.5.0
New Posts  All Forums:Forum Nav:

The iBasso DX50 Thread - Latest firmware: 1.5.0 - Page 599

post #8971 of 14500
But seriously, USB transfers via DX50 are slow. Very slow. It's USB 2.0 but the throughput feels like USB 1.1. It's not really that bad but it feels like it. A USB 2.0 microSD card adapter will be much faster. Stepping up to a USB 3.0 adapter won't make any difference. The fastest benchmark for microSD writes is 50MB/s. That's slower than USB 2.0's maximum 60MB/s. So, don't waste your money; get a USB 2.0 adapter.
post #8972 of 14500
Quote:
Originally Posted by ratinox View Post

But seriously, USB transfers via DX50 are slow. Very slow. It's USB 2.0 but the throughput feels like USB 1.1. It's not really that bad but it feels like it. A USB 2.0 microSD card adapter will be much faster. Stepping up to a USB 3.0 adapter won't make any difference. The fastest benchmark for microSD writes is 50MB/s. That's slower than USB 2.0's maximum 60MB/s. So, don't waste your money; get a USB 2.0 adapter.

alright! good info. tx

post #8973 of 14500
Yeah I need to pick up a usb 2.0 adapter.
post #8974 of 14500
Quote:
Originally Posted by Kukyo View Post
 

 

I don't use the Line Out, i actually like the HO, but a lot of people throughout the topic has claimed that the Line Out helped with hissing and gave a blacker backround, that's why i said it. I'm using 10 ohm headphones through the HO and i have no hissing issues whatsoever. Considering the line out on the DX50 doesn't actually work like a regular Line out, it is a viable option, since it wouldn't be the same as to use a pair of headphones straight to a USB DAC. Anyway, just saying what's been said in the topic.

 

 

That`s amazing because with my 9-ohm shures, the low-gain setting has unlistenable amounts of hiss, a wall of hiss that`s clearly audible even in noisy environments.  I guess I missed the discussion of hp-out vs line-out; what is the problem with using line out with iems?  Sounds pretty fantastic to me.  I admit it sounds different, maybe narrower soundstage...  But it`s so quiet compared to hp-out.  .  .   

post #8975 of 14500

I think using the LO with its higher output resistance alters the frequency response of IEM.

post #8976 of 14500
Quote:
Originally Posted by Kukyo View Post
 

 

I don't use the Line Out, i actually like the HO, but a lot of people throughout the topic has claimed that the Line Out helped with hissing and gave a blacker backround, that's why i said it. I'm using 10 ohm headphones through the HO and i have no hissing issues whatsoever. Considering the line out on the DX50 doesn't actually work like a regular Line out, it is a viable option, since it wouldn't be the same as to use a pair of headphones straight to a USB DAC. Anyway, just saying what's been said in the topic.

People use the LO to attach an external amp that fixes the hissing problem with sensitive iems. The same idea when you don't like the sound out of HO you use LO and an amp to improve the SQ. That must be what you are talking about. I don't see the point of attaching the phone directly to LO to fix hiss only to give up some SQ.

 

What do you mean by DX50's LO does not work like a regular LO? It is the same as connecting a phone directly to a USB DAC

 

Like I said you can do so and connect a phone directly to LO out of curiosity but it's not a "viable" option as you are claiming it to be. My full size can T1 is listenable out of HO at max gain/high volume(240 -255) but certainly isn't on LO.  My eQ-5 at 40 ohms tends to be a bit boomy on HO but sounded lifeless in LO and appears completely stripped of bass.

 

 

Quote:
Originally Posted by Dopaminer View Post
 

 

That`s amazing because with my 9-ohm shures, the low-gain setting has unlistenable amounts of hiss, a wall of hiss that`s clearly audible even in noisy environments.  I guess I missed the discussion of hp-out vs line-out; what is the problem with using line out with iems?  Sounds pretty fantastic to me.  I admit it sounds different, maybe narrower soundstage...  But it`s so quiet compared to hp-out.  .  .   

 

The FR of your iem will be affected and will sound completely different when the phone is connected directly to the LO as opposed to the HO. LO is intended to be connected to an external amp.


Edited by headwhacker - 12/20/13 at 6:48pm
post #8977 of 14500
Quote:
Originally Posted by headwhacker View Post
 

People use the LO to attach an external amp that fixes the hissing problem with sensitive iems. The same idea when you don't like the sound out of HO you use LO and an amp to improve the SQ. That must be what you are talking about. I don't see the point of attaching the phone directly to LO to fix hiss only to give up some SQ.

 

What do you mean by DX50's LO does not work like a regular LO? It is the same as connecting a phone directly to a USB DAC

 

Like I said you can do so and connect a phone directly to LO out of curiosity but it's not a "viable" option as you are claiming it to be. My full size can T1 is listenable out of HO at max gain/high volume(240 -255) but certainly isn't on LO.  My eQ-5 at 40 ohms tends to be a bit boomy on HO but sounded lifeless in LO and appears completely stripped of bass.

 

 

 

The FR of your iem will be affected and will sound completely different when the phone is connected directly to the LO as opposed to the HO. LO is intended to be connected to an external amp.

Yes I am well aware of the differences between headphone out and lineout - in general.  Given the slightly mysterious nature of iBasso`s implementation of these outs on dx50 (as well as their other seemingly unusual/irregular implementations of EQ, volume, etc), simply relying on what lineouts are generally intended for (ie, external amping) seems to miss the point of pursuing optimal sound quality/listening experience.  

 

I am interested in what you mean when you say the sound will be `completely different `, and that using LO is not viable.  I guess I should dig out my eQ-5s and experience what you are experiencing. . .  Could you (or anyone) be a little more objective, especially regarding frequency response?   With my SE846 the blackness of LO is appealing and I am not yet hearing any degredation in sound quality, though the sound is clearly different. I may very well be missing something and am interested in suggestions of what I should be listening for. I intend to do some focused A/B listening later today. ...

 


Edited by Dopaminer - 12/20/13 at 7:01pm
post #8978 of 14500
Quote:
Originally Posted by Dopaminer View Post
 

Given the slightly mysterious nature of iBasso`s implementation of these outs on dx50 (as well as their other seemingly unusual/irregular implementations of EQ, volume, etc), simply relying on what lineouts are generally intended for (ie, external amping) seems to miss the point of pursuing optimal sound quality/listening experience. 

 

I think that you are reading too much into the theoretical uniqueness of the DX50 line out. Digital volume control of line out goes back about a decade to the iRiver H140. It is also found on some home DACs.

 

Just set the volume to 100%. 

 

The line out bypasses the internal amp. That is what matters. You do not want to amplify the signal twice.

 

Edit: Conversely power matters as does impedance for driving headphones. This idea of powering headphones directly from the DAC chip via the line out is not a good one. I am not sure how it started.


Edited by cooperpwc - 12/20/13 at 7:24pm
post #8979 of 14500
Quote:
Originally Posted by Dopaminer View Post
 

Yes I am well aware of the differences between headphone out and lineout - in general.  Given the slightly mysterious nature of iBasso`s implementation of these outs on dx50 (as well as their other seemingly unusual/irregular implementations of EQ, volume, etc), simply relying on what lineouts are generally intended for (ie, external amping) seems to miss the point of pursuing optimal sound quality/listening experience.  

 

I am interested in what you mean when you say the sound will be `completely different `, and that using LO is not viable.  I guess I should dig out my eQ-5s and experience what you are experiencing. . .  Could you (or anyone) be a little more objective, especially regarding frequency response?   With my SE846 the blackness of LO is appealing and I am not yet hearing any degredation in sound quality, though the sound is clearly different. I may very well be missing something and am interested in suggestions of what I should be listening for. I intend to do some focused A/B listening later today. ...

 

 

The frequency response of the iem changes. I don't have any device to measure the graph but going citing the topic of impedance.

 

(The ratio of the load impedance of the phone to output impedance of the source should be 8 or above. Lower than that and the frequency response of the phone will be impacted.)

 

You already said it, the sound is different, soundstage is narrow. I don't know which song you are into but music with lots of bass clearly has decreased if not stripped of bass directly from LO.

 

Since Ibasso implemented the volume control at the DAC level you may want to turn up the volume all the way up to get the full dynamic range of the music. You'll damage your hearing if you do that and connect your phone directly to LO.

 

Yes relying entirely to the intended purpose of the line out (specifically to DX50) is the only way to pursue optimal sound quality objectively(in general) and subjectively( at least for me). But then, I can't argue if you like the SQ straight out LO.

 

 

You are welcome to do an AB test if you will and post your impressions.


Edited by headwhacker - 12/20/13 at 7:26pm
post #8980 of 14500
Quote:
Originally Posted by cooperpwc View Post

 

Edit: Conversely power matters as does impedance for driving headphones. This idea of powering headphones directly from the DAC chip via the line out is not a good one. I am not sure how it started.

 

Yet another unsupported opinion.  C`mon people: I am fully open-minded on this issue and I don`t know the technicalities; all these broad generalizations are not helpful.  Why is it not a good idea? And please don`t say it`s just because the lineout was not intended for headphones....

post #8981 of 14500

Adding "load" directly to the output of the DAC (lineout) can overload (current) the DAC itself depending on the load impedance.

 

using an amplifier which has ideally a very large input impedance and very small output impedance will help match with lower impedance of headphones and provide maximum power transfer.

post #8982 of 14500
Quote:
Originally Posted by Dopaminer View Post
 

 

Yet another unsupported opinion.  C`mon people: I am fully open-minded on this issue and I don`t know the technicalities; all these broad generalizations are not helpful.  Why is it not a good idea? And please don`t say it`s just because the lineout was not intended for headphones....

 

You need spend some time reading the Head-fi FAQs on topics like the difference between a DAC and an Amp. That is not the role of this DX50 thread.

 

I jumped in above to correct the assumption that there is something unique or different about the DX50 line out. There is not. The FAQs can take it from there.

post #8983 of 14500
Quote:
Originally Posted by headwhacker View Post
 

People use the LO to attach an external amp that fixes the hissing problem with sensitive iems. The same idea when you don't like the sound out of HO you use LO and an amp to improve the SQ. That must be what you are talking about. I don't see the point of attaching the phone directly to LO to fix hiss only to give up some SQ.

 

What do you mean by DX50's LO does not work like a regular LO? It is the same as connecting a phone directly to a USB DAC

 

Like I said you can do so and connect a phone directly to LO out of curiosity but it's not a "viable" option as you are claiming it to be. My full size can T1 is listenable out of HO at max gain/high volume(240 -255) but certainly isn't on LO.  My eQ-5 at 40 ohms tends to be a bit boomy on HO but sounded lifeless in LO and appears completely stripped of bass.

 

No, i'm talking about that there's people that used the LO directly, with no amp, and found it to be a viable option to bypass the hissing that they were hearing from the amp stage on the DX50. You can go back a few hundred pages and see (i think it might be on the first 100 pages, since it was on the early phases of the DX50, when most people started to complain about the hissing). I know there's a mis-match of impedance while you use the LO with no amp, and that it affects the frequency response on the headphone (also that it might affect either the dac, or the headphones). 

Regarding the DX50's LO and comparing it to a USB DAC might've been wrong, but i was thinking that you have more than 100 steps (at least in Windows it's 100 "steps") to regulate the output of the LO, and that gives you a little more precision (and smaller jumps in power). It is a viable option, might not be optimal, but it is viable (considering there's people using it). I'm not saying that's the ultimate solution, but it is a solution (at least, for me, cheaper than "go buy an amp"). 

Anyway... i don't have hissing issues with my IM70's (10 ohms - 108dB sens.), so i don't need to use the LO, i have used though, and at 220, i have volume hiss, and it's equilavent to the same as having the HO in 165 in High Gain. But like i said, i like the HO, and i don't have (or i can't hear it) hiss, so i don't need to use the LO method. 


Edited by Kukyo - 12/20/13 at 9:20pm
post #8984 of 14500
Perhaps we are not at the same level of acceptance of the word "viable" in this case. You are fixing an issue and accepting another that's what you are implying. To me it's not an option but rather a compromise.

I believe we are straying away from the basic idea of the HO and LO.
post #8985 of 14500
Thread Starter 
I am going to chip in, it's been said many times in the thread and based on the many threads in order posts (I won't quote cause you can all use the search engine on this site):

First it's a matter of personal listening taste to use one or the other. Now if you based yourself on those posts, you either gonna use the HO bare or LO amped else impedance may rob you of precious neutral response.

Here is what I do because that's what my ears are most happy with: iems with HO and headphones with LO+amp. I have seen myself to also use iems with LO+amp but never on LO alone. That's what my ears prefer the most, in listening activities your ears in combo with your brain are the best tools for the gauging job. IMO wink.gif
Edited by musicheaven - 12/21/13 at 12:24am
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Portable Source Gear
Head-Fi.org › Forums › Equipment Forums › Portable Source Gear › The iBasso DX50 Thread - Latest firmware: 1.5.0