FiiO has released the USBDAC JA11, with an initial price of only $9 (69RMB) and support for PEQ DSD128 PCM384

[newaudiolover]

which one would be better
the ve odo or the ja11
measurement wise
and they have the same chip so u can flash the fiio firmware ??

 

[markanini]

Best is to get the real Fiio product if you can, or use other brand dongles as they are. Reports of success in flashing the Fiio firmware onto other brand dongles is an interesting discovery, but it doesn't mean that it's good advice.

 

[sushi2020]

Can JA11 be used with an iPhone? Is it better than the Qudelix 5K as an EQ device?

 

[CedarX]

Can JA11 be used with an iPhone? Is it better than the Qudelix 5K as an EQ device?

Yes, it is UAC 1.0/2.0 audio compliant, which the iPhone supports. What is only available on Android is the app to configure the JA11, notably the PEQ functions.
There are confusing reports about the PEQ only working when connected to an Android device. I think this is incorrect, and you can save the settings to the JA11 so that they are carried over to whatever other device you connect the JA11 to—such as an iPhone.

 

[sushi2020]

Yes, it is compliant with UAC 1.0/2.0 audio, which the iPhone supports. What is only available on Android is the app that configures JA11, especially the PEQ feature.
There have been some confusing reports that PEQ only works when connected to an Android device. This is incorrect, and I believe the settings can be saved on the JA11 and carried over to other devices (such as an iPhone) that you connect the JA11 to.

Thanks! I'l try this.

 

[CedarX]

Can JA11 be used with an iPhone? Is it better than the Qudelix 5K as an EQ device?

As for the comparison to the Qudelix, the 5K is miles ahead of the JA11 if what you’re after are PEQ capabilities and other features. But it’s really not the same category nor the same price…

 

[hugwolf]

There may be serious issues with JA11 directly outputting and playing 44.1kHz audio, perhaps it's just a compatibility issue with IQOO and VIVO. I'm not sure if this is a system issue or a problem with JA11 itself. There are some software on the Android system that can output waveforms, but most of them do not have the function of setting the output sampling rate. So I made three files, all of which output 1000Hz sine waves. Their sampling rates are 44.1khz/48khz/96kHz, respectively. Then I put them into my phone and played them using the built-in player. Then I measured the output waveform using the sound card ADC. The results are as follows:

View attachment 385843
48kHz/96kHz is not particularly good, but it is tolerable (I don't think there will be any audible issues), and there are significant file issues at 44.1kHz. Also, the Exclusive USB mode of the player performs well.
View attachment 385845

do you know if this is an issue when playing 44.1khz audio on windows? or just with android?

 

[Ste_S]

Yes, it is UAC 1.0/2.0 audio compliant, which the iPhone supports. What is only available on Android is the app to configure the JA11, notably the PEQ functions.
There are confusing reports about the PEQ only working when connected to an Android device. I think this is incorrect, and you can save the settings to the JA11 so that they are carried over to whatever other device you connect the JA11 to—such as an iPhone.

Just in case the obvious needs stating - it will only work on an iPhone 15 and up, as there isn’t a lightning version of the dongle.

 

[CedarX]

Just in case the obvious needs stating - it will only work on an iPhone 15 and up, as there isn’t a lightning version of the dongle.

Just nuancing this: it does work on lightning iPhones… with a lightning to USB-C adapter/cable.

 

[Ste_S]

Just nuancing this: it does work on lightning iPhones… with a lightning to USB-C adapter/cable.

I'd be interested if there is actually a cable that does this - a male lightning to female USB-C that supports OTG, and isn't more expensive than the actual JA11

 

[CedarX]

I'd be interested if there is actually a cable that does this - a male lightning to female USB-C that supports OTG, and isn't more expensive than the actual JA11

I use a ddHiFi TC28i (non-pro) bought a couple years ago. But you’re right, anything MFI-certified is most likely more expensive than the JA11.

 

[yafengabc]

do you know if this is an issue when playing 44.1khz audio on windows? or just with android?

I haven't found this problem on Windows yet, or maybe I'm testing it the wrong way. My iPhone OTG adapter has arrived, so I'll try it on my iPhone next. As we all know, iPhone will automatically switch the sampling rate when connected to a UAC2.0 device.

 

[yafengabc]

Unfortunately, I found the same problem on my iPad. I connected JA11 to my iPad using a USB OTG adapter

Similar to Android, the only difference is that if I start playing 44.1kHz audio, the result will be very poor, but if I play 48kHz audio first and then switch to 44.1kHz, the result will be different.

By the way, this OTG plug of mine is very cheap. It only costs 6 CNY (less than 1 US dollar).

 

[yafengabc]

As a comparison, this is the result of testing 31993 with this OTG plug.

 

[CedarX]

Unfortunately, I found the same problem on my iPad. I connected JA11 to my iPad using a USB OTG adapter
View attachment 389403

View attachment 389410

Similar to Android, the only difference is that if I start playing 44.1kHz audio, the result will be very poor, but if I play 48kHz audio first and then switch to 44.1kHz, the result will be different.

By the way, this OTG plug of mine is very cheap. It only costs 6 CNY (less than 1 US dollar).
View attachment 389414

Am I reading your graph correctly: the main peak is slightly above 1kHz when playing directly the 44.1KHz signal?
That would be a firmware glitch with the clock crystal selection. Although most likely related, I’m not sure what would cause the higher noise levels…

 

[AnalogSteph]

Am I reading your graph correctly: the main peak is slightly above 1kHz when playing directly the 44.1KHz signal?
That would be a firmware glitch with the clock crystal selection.

More precisely, it looks like a completely unlocked PLL to me. Clearly something is not being initialized correctly.

 

[danadam]

There may be serious issues with JA11 directly outputting and playing 44.1kHz audio, perhaps it's just a compatibility issue with IQOO and VIVO. I'm not sure if this is a system issue or a problem with JA11 itself. There are some software on the Android system that can output waveforms, but most of them do not have the function of setting the output sampling rate. So I made three files, all of which output 1000Hz sine waves. Their sampling rates are 44.1khz/48khz/96kHz, respectively. Then I put them into my phone and played them using the built-in player. Then I measured the output waveform using the sound card ADC. The results are as follows:

View attachment 385843
48kHz/96kHz is not particularly good, but it is tolerable (I don't think there will be any audible issues), and there are significant file issues at 44.1kHz. Also, the Exclusive USB mode of the player performs well.
View attachment 385845

Seems like I can trigger distortion or not on any sample rate (Pixel 3). In my case the most difficult to capture not distorted is 96k.

 

[trungdtmc]

it's random

 

[markanini]

Maybe it's some form of RF/EMI. What happens when the measurements are done in airplane mode?

 

[danadam]

it's random

On the phone maybe. But when played through ALSA on my laptop I have:

• no distortion with 44k and its multiples,
• almost no distortion with 48k
• and almost deterministic distortion with multiples of 48k.

48k may start distorted but then calms down:

Or it may start like it can't decide if it should be distorted or not:

96k (and higher multiples of 48k) may start very distorted and then become moderately distorted:

Or usually they start moderately distorted

Or rarely they are not distorted: