As noted in the GitHub issue
_https://github.com/alsa-project/alsa-ucm-conf/issues/564#issuecomment-3016922013
when ALSA is broken, PipeWire users are affected — and AlsaTune may not resolve the underlying issue.

see above _https://dev1galaxy.org/viewtopic.php?pid=61493#p61493

ALSA UCM2 expects the configuration to be in /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf when using the modern conf.d scheme.

From the official ucm.conf and documentation:

UCM2 uses conf.d/${CardDriver}/${CardLongName}.conf as the primary lookup path.
Your card’s driver is USB-Audio, so UCM searches in conf.d/USB-Audio/.
Even though you have UMC404HD.conf in /usr/share/alsa/ucm2/USB-Audio/Behringer/, it won’t be found unless symlinked into conf.d/USB-Audio/.

On Deadalus, the folder /usr/share/alsa/ucm2/conf.d/USB-Audio already exists, but it has only one file inside

$ ls /usr/share/alsa/ucm2/conf.d/USB-Audio 
USB-Audio.conf

$ file /usr/share/alsa/ucm2/conf.d/USB-Audio/USB-Audio.conf
/usr/share/alsa/ucm2/conf.d/USB-Audio/USB-Audio.conf: symbolic link to ../../USB-Audio/USB-Audio.conf

Try to create symlinks so UCM finds the config:

sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD.conf
sudo ln -s /usr/share/alsa/ucm2/USB-Audio/Behringer/UMC404HD-HiFi.conf \
  /usr/share/alsa/ucm2/conf.d/USB-Audio/UMC404HD-HiFi.conf

Then reload ALSA

sudo /etc/init.d/alsa-utils force-reload

Now alsaucm -c U192k list _cards may work.

Do you want to enable HiFi profile?

alsaucm reload

alsaucm -c U192k list _verbs

alsaucm -c U192k set _verb HiFi

Post the output of these commands:

dmesg | grep -i ucm   

whereis alsaucm

alsaucm reload

alsaucm -c U192k list _verbs

alsaucm -c U192k set _verb HiFi

amixer -c U192k controls

On Devuan 5 Daedalus, the BEHRINGER UMC404HD has limited UCM support — while alsa-ucm-conf is installed (version 1.2.8-1), there is no dedicated UCM config for the UMC404HD in /usr/share/alsa/ucm2/USB-Audio/Behringer/. It relies on a generic USB-Audio profile instead.

$ dpkg -l | grep alsa-ucm-conf
ii  alsa-ucm-conf       1.2.8-1       all          ALSA Use Case Manager configuration files

$ ls -1 /usr/share/alsa/ucm2/USB-Audio/Behringer 
Flow8-Recording.conf
Flow8-Recording-Hifi.conf
Flow8-Streaming.conf
Flow8-Streaming-Hifi.conf
UMC202HD.conf
UMC202HD-HiFi.conf
UMC204HD.conf
UMC204HD-HiFi.conf

The lack of a specific UCM file means:
No automatic profile selection (e.g., "HiFi" or "Pro")
Mixer controls might be incomplete in alsamixer

On Devuan Excalibur (or newer systems), support may improve if alsa-ucm-conf is updated — some recent versions include UMC404HD detection in the generic USB-Audio.conf.

Causal relationships are simplified models that approximate reality. Nature is nonlinear.

Consider this alternative hypothesis: "deafness and dementia arise together and amplify each other in a sort of resonance." In such cases, it may be impossible to establish a clear cause-and-effect relationship because both conditions influence and worsen each other bidirectionally.

Research supports this view — hearing loss is linked to increased dementia risk through pathways like social isolation, cognitive load, and brain atrophy. But cognitive decline also affects auditory processing, creating a feedback loop. Some studies suggest the relationship is bidirectional, with each condition accelerating the other.

Thus, rather than asking "which came first," it may be more accurate to see them as co-evolving, mutually reinforcing conditions — like resonance in a physical system — where separation into cause and effect becomes meaningless.

Low sound quality significantly worsens speech intelligibility for people with hearing loss. Poor audio, such as low-pass filtering or noise, reduces access to critical speech cues like high-frequency sounds and temporal fine structure, making it harder to understand speech — especially in noisy environments. Studies show that hearing-impaired individuals benefit less from amplified high frequencies if they have cochlear dead regions, and degraded sound further limits their ability to adapt to background noise, increasing listening effort and reducing comprehension.

Low-quality resampling in PulseAudio or PipeWire can degrade audio, especially for speech intelligibility in hearing-impaired users. By default, PulseAudio uses basic resamplers (like speex-fixed-0) that can reduce audio quality during sample rate conversion. This affects high-frequency content crucial for understanding speech.

Poor resampling adds distortion and smears transients, making speech less clear — a significant issue for those with hearing loss. Using high-quality resamplers and minimizing conversions helps maintain clarity.

One may wonder that the sun rises every day, but this seems to be a normal course of things.

If you want to use the BEHRINGER UMC204HD 192k as the default sound card, you can set it as default in ~/.asoundrc:

defaults.pcm.!card U192k
defaults.ctl.!card U192k

This configuration tells ALSA to use the U192k (BEHRINGER) sound card by name as the default for both audio playback (pcm) and mixer controls (ctl), which is a standard and reliable method.

Plug your Behringer into USB port

Post the output of these commands:

cat /proc/asound/cards

cat /sys/class/sound/card*/id

What is needed is "id" of your Behringer

For example, I have Intel HDA  (id: PCH) and iMic USB (id: system)

$ cat /sys/class/sound/card*/id
system
PCH

For Intel HDA:

alsamixer -c PCH

For iMic USB:

alsamixer -c system

$ cat /proc/asound/cards
 0 [system         ]: USB-Audio - iMic USB audio system
                      Griffin Technology, Inc iMic USB audio system at usb-0000:00:1a.0-1.3.4, full s
 1 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xf7e10000 irq 31

This also works:

alsamixer -c 0

alsamixer -c 1

but numbers can change after reboot.

ALSA defaults to:

$ cat /usr/share/alsa/alsa.conf | grep dmix.rate
defaults.pcm.dmix.rate 48000

This means all audio will be resampled to a 48 kHz sample rate using ALSA’s built-in low-quality resampler, or possibly a media player’s own low-quality resampler. The result may not sound good, but users with reduced hearing sensitivity might not notice the difference.

For more, see:
The Biological Risk of High-Frequency EQ
_https://dev1galaxy.org/viewtopic.php?id=7750

It is easy to verify. Unplug Behringer, and run

alsamixer

Try alias

cat /sys/class/sound/card*/id

alias mixer='alsamixer -c <id of your card>'

mixer

You can add it to ~/.bashrc

mousepad ~/.bashrc

Using a software equalizer to aggressively compensate for hearing loss can potentially exacerbate existing hearing issues. Here's why you might want to consider alternative solutions:

• Boosting high frequencies without proper safety mechanisms can increase the overall sound pressure level reaching your ears, which may further damage delicate hair cells in the cochlea.

• Blasting the 10kHz to 20kHz range is effectively the audio equivalent of staring directly into a laser to "see better."

• Biological Limits: The ears are remarkably unforgiving when subjected to high-intensity high-frequency noise.

• Unlike medical hearing aids, software equalizers often lack features like dynamic range compression and peak limiters, which are designed to protect your hearing from sudden loud noises.

• Extreme equalization can introduce digital distortion, resulting in an unpleasant listening experience and potentially harmful artifacts.

If you are experiencing hearing loss, consulting with an audiologist or hearing healthcare professional is the best course of action. They can provide a proper diagnosis and recommend safe and effective solutions tailored to your specific needs.

One might tentatively suggest that the operating system one uses could, in a rather modest sort of way, have a slight influence on how one thinks  — nothing dramatic, mind you, just a small tendency to shape habits, decision-making, and the odd worldview. It’s not as if the thing actively reprograms you, of course. More like it gently nudges one’s approach to problems, file organisation, and the occasional existential crisis over software updates. Entirely unremarkable, really.

Of course. One might observe, with only mild amusement, that when a Windows user encounters a spot of bother with Linux, they often struggle to explain quite what they did — let alone articulate the nature of the problem in a way that makes the faintest bit of sense to anyone trying to help. It’s not their fault, really. They’re simply used to the machine telling them what’s wrong, in that passive-aggressive Windows fashion — “Something happened. We’ll fix it. Probably.” — rather than being expected to read a log file or, heaven forbid, recall what they actually did.

So they’ll say, “It’s broken,” with the same level of detail one might expect from a damp biscuit. No error message, no command entered, just… broken. As if the system itself has taken a turn for the worse and needs a lie down with a cool cloth.

Still, one must be charitable. It’s not their operating system’s fault if it’s never taught them to think.