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[Q] Stereo balance issue with wired headphones

Hello there!
Recently I have encountered a strange issue with the wired headphone stereo balance. The volume on the left side is as expected, but audio on the right channel is all but inaudible. It´s there, but extremely quiet. If I set the volume to maximum, audio on the right ramps up to being listenable (with what would usually be a low to low medium volume setting)...while the left is blazing like crazy, of course.
Using a stereo test MP3 (ping pong sounds, basically), I could verify that the channel seperation is correct, just to rule out that it´s a headphone jack/plug problem (i.e. the plug making no contact with the correct connectors inside the jack). Or, to put it simply, both audio channels do indeed get to the correct side of the headphone, just not enough on the one side.
I have no idea what could have caused this. Stereo balance was definitly working correctly the one time I tried wired headphones on the stock ASUS ROM, way back before I unlocked, rooted and installed custom ROMs. I haven´t tried it since, until a couple of days ago and that´s when I noticed.
Things I´ve tried since then:
- Dozens of different headphones, headsets, adapter cables. All show the same problem.
- Tried to clean out the headphone jack as best as possible.
- I even filed down the tip of one plug a bit to maybe get a better connection, but the connection itself doesn´t seem to be the problem.
- Factory resets, full wipes, different ROMs (stock, CM, CROMi).
- Different audio DSPs.
- A LOT of audio related apps (Volume+, EQs...)
- Audio players with built in balance control. These do indeed shift the stereo image to the right side, but don´t make the right channel itself louder, which results in a very quiet, kinda mono-y, hollow-y sound at normal volume levels.
I am assuming there is a hardware problem, and I assume it´s not the headphone jack itself, but something else in the circuitry.
I really, really, really don´t want to RMA the thing, since it took me *weeks* of discussion with ASUS support to get it unlocked in the first place (wasn´t able to, due to the infamous MAC/server mismatch thingie), and I don´t want to get it back with a new mainboard and perma-locked.
So, my questions are: What else can I try? Is there a way to boost the one faulty audio channel? Maybe by editing some system file or writing a script or something?
I´m unlocked, rooted and running CROMi-X 4.3b4 now (which is going to be great, once it matures, btw).
Thanks!

I have a problem with the Bluetooth headphone. Please help me!

Hi everyone.
I am using a Bluetooth head phone LG hbs730 tone+ with my nexus 5.
I don't know why the sound is so loud even when I turned off the volume on my nexus.
I tried it with nexus 7. Everything was fine
But now when I use it with nexus 5. It just blow up my head. I set the lowest sound on both my nexus 5 and my Bluetooth headphone but it is still so loud. I tried to find some app on app store but it didn't help.
Does anyone have solution? Please help me!
Thank you.
Sorry for my bad English
Sent from my Nexus 5 using Tapatalk

This is not a Nexus 5 issue. It is Kit Kat issue on all devices that use the default Google Bluedroid Bluetooth stack, meaning Nexus devices and Google Play versions (other devices running a modified stack may not be affected).
Supposedly, it is an extension to Bluetooth AVRCP 1.3 that enables Bluetooth audio devices to directly control Android's system volume. It seems some genius thought two independent volume levels (headphone volume and handset bluetooth level) was too confusing for folks. Clearly they did not think about (or test) that some Bluetooth audio devices with their own volume controls might default to a very high or low level, and control of only the handset's bluetooth level would not provide sufficient range of adjustment.
So once again we have Goofle googing up bluetooth in Android. Please share your disappointment in the following threads so that we might see a fix ASAP. Guessing they are facing law suits for hearing damage if it is not addressed quickly.
http://productforums.google.com/forum/#!msg/nexus/X6Hwt2qMYDo/7qd-JGylQv0J
http://productforums.google.com/forum/#!msg/nexus/dsf7hQPesds/zWhIE27o2KwJ
http://productforums.google.com/forum/#!topic/nexus/uXzs0e3l7rI
http://productforums.google.com/forum/#!msg/nexus/b5h94ggUIac/qkBs9WUIh4oJ

Pandora causing full volume on Bluetooth
I was having the same issue with the volume on my Motorola SF 600 headset blasting and refusing to turn down. After a lot of searching, I discovered that Pandora was causing the issue. I got it to work normally by disabling the "Bluetooth for Automotive" in the Pandora settings. It then came back. I then reverted to Pandora 4.1 and got rid of the problem. You can Google and find versions of Pandora 4.1 in the wild.
Here is more information on the helpful post.
http://productforums.google.com/forum/#!topic/nexus/dsf7hQPesds

ssnacks said:
I was having the same issue with the volume on my Motorola SF 600 headset blasting and refusing to turn down. After a lot of searching, I discovered that Pandora was causing the issue. I got it to work normally by disabling the "Bluetooth for Automotive" in the Pandora settings. It then came back. I then reverted to Pandora 4.1 and got rid of the problem. You can Google and find versions of Pandora 4.1 in the wild.
Here is more information on the helpful post.
http://productforums.google.com/forum/#!topic/nexus/dsf7hQPesds
Click to expand...
Click to collapse
Thanks, but I am seeing this in Pocketcasts and Play Music on both Nexus 4 and 7, and Pandora has never been installed on either of them.

Sound Quality Marshmallow

Hi guys,
since the Update to 6.01, I have experienced, that the audio quality of the device (Android Auto, sound over USB) got worse.
I have a soundsystem in my car and I definetely hear the difference....
Somebody knows something that samsung changed something into the software in therms of sound quality?
Perhaps somebody have had a look into the code and see if samsung is doing some compression things or something like that...

slg60 said:
Hi guys,
since the Update to 6.01, I have experienced, that the audio quality of the device (Android Auto, sound over USB) got worse.
I have a soundsystem in my car and I definetely hear the difference....
Somebody knows something that samsung changed something into the software in therms of sound quality?
Perhaps somebody have had a look into the code and see if samsung is doing some compression things or something like that...
Click to expand...
Click to collapse
I didn't like the sound quality in lollipop neither. What i've found is that if you push the phone volume all up it sound even worse, all distorted. Are you using it full volume? Try 75% on the phone and amp up your system gain instead

What I found out is, that I have set the dynamic range compression on in spotify, with turning it off, it sounds way better now....
Connected via usb directly to android auto capable head unit there is no chance to adapt things on the mobile, also no adaption of volume.... seems that sound directly gets bitwise transported to the head unit, so no dac involved etc.... Also adapt sound feature is not working for that.... I only have to be sure that the music gets directly transported to the usb, without compression from the music app etc....

Bluetooth audio skips

I'm on 8.1 dp2 in hopes of a fix but it doesn't seem to have helped. My Bluetooth audio skips once every song or two and it's super frustrating while in my car. I've tried disabling WiFi and Bluetooth scanning and adjusting the codec options but nothing seems to work? Anyone else with this issue or a solution? I just received wireless earbuds so I'll test those to make sure it's not my stereo but my s8 had worked fine...
Ok say my new ear buds are Bluetooth 5 and I haven't noticed a single skip yet. My stereo is only 3 so maybe that has something to do with it? As far as I can find however there are no current bt5 stereos so I'm not sure what the issue or solution would be...

Enable the developer options. You can choose between sound quality and connective stability. You can also lower the sampling rate to 44100kHz. In a word, reduce the data transferring rate. I think these might help.

I did all of that and have tried all the options

slyr114 said:
I did all of that and have tried all the options
Click to expand...
Click to collapse
I have had this problem cropping up on various Toyota forums with the root cause being the automotive entertainment systems. It appears that most newer systems are still based on 2008/9 technologies which only have a limited ability to buffer the B/T audio. I'm not suggesting that this is your car but I thought it is worth mentioning.

Ive got a Sony stereo I put in myself haha it's relatively new

Headset mic adjustment app or Magisk module for Xiaomi phone (and not only)

If you put a search string "problem mic headphones" in XDA forums, you'll get tens if not hundreds of threads which start at least in 2015 and consider Xiaomi as well as Samsung, OnePlus, sometimes Moto phones - both on vendor and custom OS. Most of the threads are created in model specific subforums and most of them are left unanswered, even though the issues repeat from time to time, from one manufacturer to another. If I catch it correctly, Xiaomi (Redmi, Mi) is the champion in this field. But problems persist in other phones too.
One of the biggest issues often reported is that one day (or from the very beginning) when you put headset jack in, your interlocutor hears you badly. Your voice is too weak or ambient noise is too loud in respect to your speech. In many cases a proposed solution is 1) to install Mic Fix module for Magisk (on rooted phones). But it does not always work. 2) To change the headset and 3) to clean the physical jack hole. In many reported cases this does not help neither. So, there is a software switch which does not work.
I entered the club and having this precise issue with my Redmi Note 10 Pro running first on vendor Miui then on CrDroid 8. I changed three different wired headsets, including the one by Xiaomi, with no result. Installed Mic Fix module for Magisk (both latest updates), with no effect.
Manipulating the phone during the call or during a test record (bringing it closer and further to the mouth, putting it into my pocket with headset attached, etc.), I acknowledged that the problem is that the phone takes inbound audio signal from the phone built-in microphone and not from the headset. Both in mobile calls and in various messengers. Meanwhile listening to my interlocutors, as well as music alone is just fine.
Trying to solve the issue I found several great apps and Magisk modules, such as Dolby Atmos and Viper4Android FX equalizers which enhance your listening experience. But I found no clearly designated app or module which lets take control of the microphone when headset is attached. Literally no dedicated app or feature in all-rounder apps lets tweak the mic use. Meanwhile the issue persists during at least 7 years.
Maybe the solution is so evident, and the app/module is so easily and widely used that it's a shame to discuss such a noob topic? Please break the silence and tell which tools you use for tuning or tweaking your mic in the headset.
And if you already faced the same or a similar problem and found the same (zero) software solution for Android, what is the rational reason why such an app or module was not yet made by an expert and creative dev?

By now a solution that I found is to use a bluetooth headset. In this case the mic works well during calls.
But I like using wired headsets (and sound quality of mine wired is better than those on bluetooth). So I am still in search for an app or module to tweak or fix the mic redirection issue.
If someone can help, please be kind to give a hint.

Same here my man, and although my issue is slightly different, it's looking for the same solution, an app to tweak the mic
I'm using a oneplus 3 and my favorite ROM is Resurrection Remix (A10), but, if you use CTIA headsets (mine are earbuds because i don't like in-ear), sometimes the headset gets detected as OMTP and the mic produces a really loud hight pitch noise
So far i haven't found any solution, besides reconnecting the headset several, several times until it gets it right