Database Users

Car speakers over bluetooth flat

The equalizer built in works very well over a wired connection, but over bluetooth sound is flat with a lot of quality loss. Any ideas if it is resolvable? I already enabled the enhanced stereo option in bluetooth options.
Sent from my DROIDX using Tapatalk

by flat do you mean there is not a lot of hi and low?
Bluetooth at this stage (2.0) as far as i know won't sound close to even an analog wired connection. but for me it's "good nuff" considering i like the feature of just getting in my car and hitting play and not have to wire anything up to the phone.
Which application are you using, I could try doing a sound test between both.
I do understand what your saying my old windows mobile phone sounded about as fair as an FM radio over bluetooth, when i looked into it seemed to just be limitation of the protocol
Right now my sound system is lacking (no sub, the mains can only reach down to 90hz) so at this time I can't get good est of the differences with the sound to compare my phone to yours.
But when i had my windows mobile it wasn't so much "flat" it just sounded like a 96kb mp3, like it be re-encoded kinda, it still had good range.
You may also want to look into your receiving bluetooth device and how good the reviews are on that.
hope i've helped a bit

[Q] Head phones with mic

Hey people. Thanks for all info, been reading about the defy here for some time. Got one now and I love it. I had a few smartphones before and this is by far the one I would stick to forever if I had to.
So, my question is: Are there any good head phones (in-ear plugs, with mic and maybe even music controlers) avaliable, and that I can be certain to be compatible with the Defy? Or could I just buy any that works fine with other Android or Motorola devices? Motorola is not sold in Sweden where I live, so it's not like I can check out any stores IRL here...
With my Xperia x20 mini, exacly what I described came along with the phone. Too bad that you just got these normal plugs with the defy. Cos there is just no way I would use those. As of now I stick to my old head phones but I'd love the mic function with my In-ear plugs.
Thanks for any help!
Ekholm
Ok, so I found this site:
thinkmotoroladefy.com/wiredheadsets.html
and it's all looking good, except for the part that they are a bit low-priced. I'm looking for high quality ones. I.e my current head phones was about 90 USD.

For information, iphone handsfree works fine

Thanks!
By chance, does anyone know if "Klipsch Image S4i" would work? they seams to be perfect! Volume, track fwd bwd and play...

I got one of these a few months ago, works fine with my HTC Desire. Not the best headphones in the world, but more than capable of handling a bus ride. You can unplug the headphones, clip on a small plastic hook and use it as an in-ear Bluetooth headset too. Two birds with one stone
I can get around 10 hours out of them between charges.

Thanks, it seams to be mono, right? Mono doesnt sound too thrilling...

If you use power amp you can set it up to use the controls on headphones to start and stop music, instead of calling the last number you called. It will work on the lock screen too.
This was the only way of getting it to work i found for the defy and i tried about 10 different headphones with in-line controls. Bluetooth stereo sets like the one above with controls seem to work fine for music however, ive got a sony bluetooth set and the controls worked right away on the standard media player.

cthulhu501 said:
For information, iphone handsfree works fine
Click to expand...
Click to collapse
Really? i got philips iphone headset with remote and there is a constant background noise, probably caused by the remote. which headset are you using?
the one that came with my phone has no remote!
Sent from my MB525 using XDA App

i'm using now my new wesc bongo with handsfree, and they do work great!

Hi everybody I'm new,
Does anyone can confirm this pinout for Defy's jack 3.5mm?
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Ground
4. Sleeve - Mic
or this used in most mobiles:
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Mic
4. Sleeve - Ground

I use Razer Moray+™ they have no remote function so you have to answer the call on the phone. But you have a mic and the work good for musik and phone calls.

anyone got an update for this, still looking for ear buds with a mic.

Klipsch Pro Media set(based on the S4i but a bit better build for traveling etc).
Awesome set up with defy. The S5i rugged set is also great as they are moisture proof and very overbuilt.

Hulkanator said:
anyone got an update for this, still looking for ear buds with a mic.
Click to expand...
Click to collapse
I use nokia's Bh214 . Works pretty well!

bether said:
Hi everybody I'm new,
Does anyone can confirm this pinout for Defy's jack 3.5mm?
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Ground
4. Sleeve - Mic
or this used in most mobiles:
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Mic
4. Sleeve - Ground
Click to expand...
Click to collapse
Openend up the original Motorola Defy headset and found this:
farm6.static.flickr.com/5256/5451992356_6e55ae0fce.jpg
flickr.com/photos/kikus/5451992356/
(I can not post any outside links because I am a new user )
1. Tip - L
2. Ring - R
3. Ring - M-
4. Ring - M+
(measured with a multimeter - hope this helps)

Thx,
Yeah, exactly as you wrote.
I remade cheap handset with remote (from eg. www.ebay.com).
It works with any headphones

I used my original headset on a iphone before. So I assume that every headset that works on the iphone should also work on the defy.
Sent from my MB525 using XDA App

I wonder if Sony Ericsson's headsets work. These seem pretty good:
goo.gl/TquJQ
goo.gl/eQc9W
Would be good if they work.
BTW, I tried Samsung Galaxy SL's Stereo In ear handsfree and the sound quality was just awesome! Might get myself one of those!!

I've tried the iPhone standard headphones and sound works but Mic and controls don't. There is a pair of sennheiser mm50 Nokia. Which will work fine. Ordering one shortly.

Hi
I can confirm that at least not all iphone headset work the defy, even if the pinout is identical. I tried the Sennheiser MM70i and they don't work!
I soldered the mic of the standard Headset to the MM70 and now im happy,
but definitely nothing i can recommend
greetings

Killigrew said:
Hi
I can confirm that at least not all iphone headset work the defy, even if the pinout is identical. I tried the Sennheiser MM70i and they don't work!
I soldered the mic of the standard Headset to the MM70 and now im happy,
but definitely nothing i can recommend
greetings
Click to expand...
Click to collapse
yes u are right
I have try headphones
wich have microphone
from an alcatel.
no sound
if I push deeper
into the phone
the plug then it
start to hear random
in both speakers
so the pin is longer
or shorter on moto
Sent from my MB525 using XDA App

[Q] Using galaxy 7.7 as headunit + hands free calling

So here's what I wanna do -
I want to use the galaxy 7.7 (preferred this model just because its the only galaxy with call function) instead of the stock head unit in my car. I was thinking of going completely wireless and streaming the audio to my car amp via a bluetooth receiver. But what would happen when I receive a call? the sound will be streamed to my amp, but what happens with the audio in / microphone ?
Would it be enough to speak straight to the tab's microphone? will the microphone be enabled at all?
The other option, which i prefer less is to run wires to my amp rather than using a bluetooth receiver, and via bluetooth connect to a hands free car kit (but this means I would have to plug in the audio each time as I wont leave the tab in my car ever)...
Any suggestions on how to get this done?
PS is there any hack available to use the call function on the galaxy tab 10.1?
Thanks!!

Unless you have some sort of amplifier that received power and signal wirelessly, you're going to need some kind of line output converter to get audio out of the gtab 7.7 and into your amp. What you're talking about doing, if I'm understanding you correctly simply can not be done.

Work well with audio cable ^^ tested calling or streaming from 7.7
Sent from my GT-P6800 using xda premium

Josvaz said:
Work well with audio cable ^^
Click to expand...
Click to collapse
well, using an audio cable to extract the audio would be along the lines of a line output converter, like I said before
what the OP is talking about is having something that's completely wireless, that will act as a source unit and interface with his amplifier ... wirelessly. Simply just won't work that way.

I have considered doing this (just ordered a GT 6800) but see now that there are android head units starting to come out. Still, you can always use bluetooth to connect the GT to your sound system. It will have good stereo sound and also have the mic input.

Here's my set up: Tab 7.0 plus wifi only but I use a hotspot on the road. I'm using cables to connect audio but thought about bluetooth, but I think you get better sound with cables maybe not! why buy a head unit $800.00 that doesn't give you a 1/4 of the functionality you get with the Tab.

Sorry forgot to post picture

i use bluetooth for my audio because i like the way i can use my steering wheel controls to do next/previous track on the tablet.
The audio is fine for me, but current bluetooth still not as good audio-wise as a real cable. If you use a cable and power the tablet at the same time you may get a hum - if so, put a PAC SN1 to reduce the ground-loop interference.
Bandzdaddy - It looks like Torque app, am i right? I use that as well because my turbo car didn't come with a boost gauge and Torque let's me have a virtual one!
xda thread w/my setup: http://forum.xda-developers.com/showthread.php?t=1623411

Samsung Level Link Wireless BT Adapter

Does anyone use the Samsung Level Link Wireless Adapter?
http://www.samsung.com/us/mobile/cell-phones-accessories/EO-RG920BBEGUS
When connected to your Note 4 via jack lead and set to "Send", are you able to play/pause on your BT earbuds/headphones or play/pause, Rew/FF, Vol up/Down on the adapter?
I can't.
If I connect the adapter (Receive mode) to wired earbuds and connect via BT to the phone, I can use all the controls on the adapter. But, nothing on the wired earbuds.
Does anyone else have the same "problem" as me or do you have full controls on the adapter/earbuds in Send/Receive modes?
I'm more interested in using the adapter wired to the phone and in Send mode.
Thank you.

Any bods out there?

as far as I know these Bluetooth audio receivers/transmitters never support "external" microphones or controls.
and the link is no exception.
this makes sense because the layout and signals of 3.5mm headset connectors(4 "rings") varies between different brands/models.
3.5mm stereo connectors(3 "rings") are standardized, and can be easily exchanged between devices made in the last few decades.
samsung uses a headset connector on their wired headset because they make those only for their phones, but the level link is made for devices from all brands and therefore needs to be built for compatibility and consistency.
compare the plug on the wired headset included with your phone with the plugs on the headphone and connector cable included with the link, and you'll notice the headset has an extra ring.

thedicemaster said:
as far as I know these Bluetooth audio receivers/transmitters never support "external" microphones or controls.
and the link is no exception.
this makes sense because the layout and signals of 3.5mm headset connectors(4 "rings") varies between different brands/models.
3.5mm stereo connectors(3 "rings") are standardized, and can be easily exchanged between devices made in the last few decades.
samsung uses a headset connector on their wired headset because they make those only for their phones, but the level link is made for devices from all brands and therefore needs to be built for compatibility and consistency.
compare the plug on the wired headset included with your phone with the plugs on the headphone and connector cable included with the link, and you'll notice the headset has an extra ring.
Click to expand...
Click to collapse
Thank you for replying and the information
I haven't noticed the number of rings before. Would it be worth buying a double ended 3.5mm jack cable with 3 rings at each end?

it's not worth it.
if they didn't bother with a 4th line in a tiny cable, they wouldn't bother adding a 4th contact in the link's port or the software to make use of that contact.

thedicemaster said:
it's not worth it.
if they didn't bother with a 4th line in a tiny cable, they wouldn't bother adding a 4th contact in the link's port or the software to make use of that contact.
Click to expand...
Click to collapse
Awesome, thank you very much

the link is still a neat device.
I did a little test, and if you have a 2nd aptx capable headset you can almost completely cut out the delay caused by the transcoding.
I tested with a level link wired to my phone and later my 3DS and paired with my LG Tone infinim, and I was definitely getting the "30 ms or less" delay that's promised with aptx low latency.
using the level link with a headset like the tone infinim is really the best way to get wireless audio when playing games on a handheld device like a smartphone or 3DS.

thedicemaster said:
the link is still a neat device.
I did a little test, and if you have a 2nd aptx capable headset you can almost completely cut out the delay caused by the transcoding.
I tested with a level link wired to my phone and later my 3DS and paired with my LG Tone infinim, and I was definitely getting the "30 ms or less" delay that's promised with aptx low latency.
using the level link with a headset like the tone infinim is really the best way to get wireless audio when playing games on a handheld device like a smartphone or 3DS.
Click to expand...
Click to collapse
Cool, thanks for the tip.
I'm just using it with my Note 4, Jaybird X2 and this molle style case https://www.amazon.co.uk/Urvoix-Case-Cover-Samsung-Galaxy/dp/B00S6DQ37W/
The case cuts out a lot of the BT signal (some days everything plays fine and others constant break ups). Either that, or the BT strength signal fro my Note 4 isn't that strong.
The Level Link cured the break ups, but I loose playback control.

perhaps a smartwatch could take care of the controls.
smartwatches are a lot less demanding with their signal strength.
I use a pebble time steel, but all pebbles are great for music controls.

thedicemaster said:
perhaps a smartwatch could take care of the controls.
smartwatches are a lot less demanding with their signal strength.
I use a pebble time steel, but all pebbles are great for music controls.
Click to expand...
Click to collapse
I've been looking at smartwatches, but I either can't justify the cost for the usage I'd get from it or there's always a better one coming soon.
Ideally, I'd want a metal bracelet and Google Wear 2 compatible.
I'll look again, nearer to the release of Google Wear 2 and see what's available... or rumoured to be coming soon.

Android 5.1 head unit >>> USB Audio (DAC) output

Hi, I installed a MTCD Android head unit with Android 5.1.1 in my car two weeks ago. (I could'nt start this thread in the MTCD section because I'm new here)
My car audio setup goes as follow: Android Head Unit >>> USB Cable >>> PCM2704 USB to SPDIF adapter >>> SPDIF coax cable >>> MiniDSP 6x8 >>> 3 Amps >>> Speakers + sub.
So far I've been able to get SPDIF sound output with Neutron (Direct USB mode), Onkyo HF Player, USB Audio Player Pro, HibyMusic Player.
Sound is amazing btw.
If I understand correctly, all these apps are working with the USB DAC because they use their own app's USB Driver.
Important to know: All song in 44khz are playing fine, songs in 48khz makes every app freeze. I got a way around this by setting Neutron to resample every song in 44khz, so all songs are working now.
Now, if I play a song in Google Play Music, Spotify, Kodi, etc no sound comes out ... same thing for my HU video app, phone calls etc.
Is there a way around this ? What modifications can be made so every sound outputs to the USB Audio ? IE. kernel update, system files modifications etc ??
Thanks for any input.

Nobody use a USB DAC with his head unit ?
I have found this thread: http://forum.xda-developers.com/showpost.php?p=66707293&postcount=47
But I dont think it applies to Android 5.1, sound management is different.

i dont use any DAC on this head unit. But I do have a Dragonfly USB DAC on my computer. the Dragonfly Red says it works with Android. Not sure if that is just marketing, or if it doesn't something specific.

CadillacMike said:
i dont use any DAC on this head unit. But I do have a Dragonfly USB DAC on my computer. the Dragonfly Red says it works with Android. Not sure if that is just marketing, or if it doesn't something specific.
Click to expand...
Click to collapse
Can you try it please ?

DanB0y said:
Can you try it please ?
Click to expand...
Click to collapse
i dont know how I would even go about hooking it up? i could plug it into the USB port, but then what? use headphones?
all my speakers go through the wiring harness

CadillacMike said:
i dont know how I would even go about hooking it up? i could plug it into the USB port, but then what? use headphones?
all my speakers go through the wiring harness
Click to expand...
Click to collapse
you would need to be using pre-outs, using a 3.5mm to rca cable into an external amp.
---------- Post added at 09:03 AM ---------- Previous post was at 08:57 AM ----------
interesting that you've tried this. This forces you to completely by-pass the HUs sound processing.
I have the same DSP, but I'm using direct pre-outs. I like this idea though bc it gets around the low pre-out voltage, and allows you to ignore the poorly implemented sound processing in the HU.
Unfortunately, you probably need to modify the filesystem to get this to work, as your link shows. Why do you feel the need to use a DAC in addition to the DSP?

Hisma said:
you would need to be using pre-outs, using a 3.5mm to rca cable into an external amp.
Click to expand...
Click to collapse
my sub is tapped into my speaker wires, so I dont use the RCA preouts. So I probably can't try this.
However, I think my audio is pretty great with the Joying

CadillacMike said:
i dont know how I would even go about hooking it up? i could plug it into the USB port, but then what? use headphones?
all my speakers go through the wiring harness
Click to expand...
Click to collapse
Yes simply use headphones
We just need to know if audio is outputing from the DAC.
I would appreciate, thanks !

Hisma said:
Unfortunately, you probably need to modify the filesystem to get this to work, as your link shows. Why do you feel the need to use a DAC in addition to the DSP?
Click to expand...
Click to collapse
The DAC is a really clean source signal VS the head unit, I have a 2000$+ sound system in my car and sound quality is very important to me.
Also, DAC is digital signal VS analog RCA outputs on the head unit.

DanB0y said:
The DAC is a really clean source signal VS the head unit, I have a 2000$+ sound system in my car and sound quality is very important to me.
Also, DAC is digital signal VS analog RCA outputs on the head unit.
Click to expand...
Click to collapse
I agree. I feel like right now my HU is the "weak point" of my system. I am about the same as you, roughly $2000 in equipment (probably a little more).
focal KRX3 3-way active system w/ a cheap kicker sub + 3 amps. I have the C-DSP along w/ a line driver to manage the low pre-out voltage. Would love to take the line driver out of the signal chain if I could. All these components are taking up a lot of valuable space.
I hope you figure this out. I don't have a MTCD, I have a non-joying 4.4 HU. Would love to use the SPDIF inputs on the C-DSP as opposed to the ****ty pre-outs from the HU.

Hisma said:
I agree. I feel like right now my HU is the "weak point" of my system. I am about the same as you, roughly $2000 in equipment (probably a little more).
focal KRX3 3-way active system w/ a cheap kicker sub + 3 amps. I have the C-DSP along w/ a line driver to manage the low pre-out voltage. Would love to take the line driver out of the signal chain if I could. All these components are taking up a lot of valuable space.
I hope you figure this out. I don't have a MTCD, I have a non-joying 4.4 HU. Would love to use the SPDIF inputs on the C-DSP as opposed to the ****ty pre-outs from the HU.
Click to expand...
Click to collapse
Nice ! I have 3 way peerless (tweets + 3.5 mids + 7in woofer) 1 pioneer amp 4ch for tweets + mids and 1 pioneer amp 2ch for the woofers, another JBL amp in the trunk with a 15in Alpine Type-R. I have the C-DSP 6X8 MiniDSp as well

SPDIF to C-DSP SPDIF Input would give you 4V at the MiniDSP RCA outputs

DanB0y said:
SPDIF to C-DSP SPDIF Input would give you 4V at the MiniDSP RCA outputs
Click to expand...
Click to collapse
well you have convinced me to give this a shot. The USB DAC + 25 ft coax cable only set me back $35 on amazon. So even if this doesn't work I won't be mad.
The potential for 4V of CLEAN pre-out voltage is too enticing to pass up. The line driver works, but like I said it's another box that needs power/space/etc. The USB DAC also allows me to take the HU sound processor fully out of my signal chain.
I am unfortunately using android 4.4, so dont think I can help you much, but I will let you know if this works nonetheless.

Hisma said:
well you have convinced me to give this a shot. The USB DAC + 25 ft coax cable only set me back $35 on amazon. So even if this doesn't work I won't be mad.
The potential for 4V of CLEAN pre-out voltage is too enticing to pass up. The line driver works, but like I said it's another box that needs power/space/etc. The USB DAC also allows me to take the HU sound processor fully out of my signal chain.
I am unfortunately using android 4.4, so dont think I can help you much, but I will let you know if this works nonetheless.
Click to expand...
Click to collapse
If it dont work natively, I'm 99% sure it will work with the Neutron music player. Install it and then go to hardware settings and enable Direct USB Driver. :good:

DanB0y said:
If it dont work natively, I'm 99% sure it will work with the Neutron music player. Install it and then go to hardware settings and enable Direct USB Driver. :good:
Click to expand...
Click to collapse
well I tested this today and I am very pleased with the results. I really do notice a difference in SQ. It sounds "cleaner" and fuller.
Only major thing I notice is the overall volume seems really high over SPDIF. Only place I can adjust the volume now is with the DSP, but even then, I find I need to turn the gain down on the SPDIF inputs to get an acceptable volume. This is even with gain all the way down on my amps. This leads to a bit of clipping on the highs.
Did you make any adjustments in neutron player or the DSP to get an acceptable volume? Or do you get by with just adjusting the DSP master volume?
Now I just need to see if I can get all my sound to route through. I like to listen to streaming music too but I don't think I can go back to using analog pre-outs.

Hisma said:
well I tested this today and I am very pleased with the results. I really do notice a difference in SQ. It sounds "cleaner" and fuller.
Only major thing I notice is the overall volume seems really high over SPDIF. Only place I can adjust the volume now is with the DSP, but even then, I find I need to turn the gain down on the SPDIF inputs to get an acceptable volume. This is even with gain all the way down on my amps. This leads to a bit of clipping on the highs.
Did you make any adjustments in neutron player or the DSP to get an acceptable volume? Or do you get by with just adjusting the DSP master volume?
Now I just need to see if I can get all my sound to route through. I like to listen to streaming music too but I don't think I can go back to using analog pre-outs.
Click to expand...
Click to collapse
Great ! Now you're in the same boat as me lol
(Except for the clipping, I have no problem with that)
What is the model of your amps ? I have my gain to around 1/3 in the amps (They're up to 6.5V input sensitivity) and spdif input gain is at 0.
For your sound routing, you can sum the rca inputs and the spdif input together in the DSP And then you use your input levels to match the loudness. That way, you'll be able to listen excellent SQ music from Neutron and still hear BT phone calls, Youtube, navigation etc trough the analog inputs.

DanB0y said:
Great ! Now you're in the same boat as me lol
(Except for the clipping, I have no problem with that)
What is the model of your amps ? I have my gain to around 1/3 in the amps (They're up to 6.5V input sensitivity) and spdif input gain is at 0.
For your sound routing, you can sum the rca inputs and the spdif input together in the DSP And then you use your input levels to match the loudness. That way, you'll be able to listen excellent SQ music from Neutron and still hear BT phone calls, Youtube, navigation etc trough the analog inputs.
Click to expand...
Click to collapse
Yes! This is exactly what I have done. I spoke too soon also. The clipping was more a tuning issue than anything (changed cross-over on tweeters & lowered their output a bit). I was able to set the gain on SPDIF back to 0.
Man it sounds really good now. I haven't any real tuning yet outside of setting gains and cross-overs. I think once I tune the system it'll take it over the top.
I have a mosconi as100.4 on the tweeters and mids, and a alpine mrv-m500 on the sub. (i have one other amp I am replacing to power mid woofer, should arrive tomorrow). It's a total overkill system, but I find great deals on used gear on diymobileaudio classifieds so I keep upgrading lol.
So now I will use neutron for majority of listening, and by mixing channels together on the analogs I already had connected, I get acceptable SQ for phone calls and streaming music. I have no desire to mod my system files the way it was shown in that thread you linked. Looks too risky. I am okay with this new arrangement since 90+% of my listening is my personal music collection.
Really appreciate you making this thread. I always knew my system was capable of sounding better and this did the trick. I will let you know if I figure anything else out that could be useful.

Hisma said:
Yes! This is exactly what I have done. I spoke too soon also. The clipping was more a tuning issue than anything (changed cross-over on tweeters & lowered their output a bit). I was able to set the gain on SPDIF back to 0.
Man it sounds really good now. I haven't any real tuning yet outside of setting gains and cross-overs. I think once I tune the system it'll take it over the top.
I have a mosconi as100.4 on the tweeters and mids, and a alpine mrv-m500 on the sub. (i have one other amp I am replacing to power mid woofer, should arrive tomorrow). It's a total overkill system, but I find great deals on used gear on diymobileaudio classifieds so I keep upgrading lol.
So now I will use neutron for majority of listening, and by mixing channels together on the analogs I already had connected, I get acceptable SQ for phone calls and streaming music. I have no desire to mod my system files the way it was shown in that thread you linked. Looks too risky. I am okay with this new arrangement since 90+% of my listening is my personal music collection.
Really appreciate you making this thread. I always knew my system was capable of sounding better and this did the trick. I will let you know if I figure anything else out that could be useful.
Click to expand...
Click to collapse
Yeah I know what overkill sounds like haha
For frontstage 3way I got a 4ch Pioneer Premier PRS-X340 running 2x NE25-VTS04 Peerless tweets and 2x NE95W-04 3in Peerless mids, another Pioneer old scholl amp pushing 2x175w for 7in Wavecor woofers. In the trunk is a JBL GTO14001, 1500Wrms @2ohm pushing a 15In Alpine Type-R sub in 3.5cuft tuned @21hz
All my amps are very good condition used gear found on classifieds too, you can dig some real treasors for very little money sometimes !
I've been looking all around the web since last week for how to route every sounds of the HU to a USB DAC, translating and reading about 500 pages worth of XDA/Russian Android forums, spent last nights editing config files all around my HU System folder, I tried the how-to link I posted in OP for MTCB units, nothing to do.. I really think the Kernel must be enabled for USB Audio for it to work, my DAC shows up in USB devices info but not in the audio output devices.
Well, I'm still happy because my FLAC music collection plays incredibly well i dont car that much for FM Radio SQ, I only wish I'd be able to listen to Spotify or Kodi on the DAC.
Im r eally glad if I could be any help to you and will keep this thread updated if I find something !

navigation guidance voice goes through usb audio ?

DanB0y said:
Yeah I know what overkill sounds like haha
For frontstage 3way I got a 4ch Pioneer Premier PRS-X340 running 2x NE25-VTS04 Peerless tweets and 2x NE95W-04 3in Peerless mids, another Pioneer old scholl amp pushing 2x175w for 7in Wavecor woofers. In the trunk is a JBL GTO14001, 1500Wrms @2ohm pushing a 15In Alpine Type-R sub in 3.5cuft tuned @21hz
All my amps are very good condition used gear found on classifieds too, you can dig some real treasors for very little money sometimes !
I've been looking all around the web since last week for how to route every sounds of the HU to a USB DAC, translating and reading about 500 pages worth of XDA/Russian Android forums, spent last nights editing config files all around my HU System folder, I tried the how-to link I posted in OP for MTCB units, nothing to do.. I really think the Kernel must be enabled for USB Audio for it to work, my DAC shows up in USB devices info but not in the audio output devices.
Well, I'm still happy because my FLAC music collection plays incredibly well i dont car that much for FM Radio SQ, I only wish I'd be able to listen to Spotify or Kodi on the DAC.
Im r eally glad if I could be any help to you and will keep this thread updated if I find something !
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Any update on this thread ?
I made some sort of experiance, on Joying HU , the 2GB Rockchip Sofia version (10.1" screen) :
Using info from https: // source.android.com/devices/audio/usb.html - i looked into the "audio_policy.conf" file on the Joying, and for sure , there was no reference to any USB audio interface.
I am no android expert .. but i edited this file , with the info gathered from the link above , and after a reboot - the HU did indeed send the audio to the USB port.
Audio from all the apps i tred , was routed to the USB interface (Radio , DAB player,Kodi etc..)
The bad thing (?) - there was no volume control , all audio is at max level.
An external volume control could possibly remedy this.. i will look into it
Frank