If I want more bass in my headphones, is there anything I can do?

[remussatala]

If I want more bass in my headphones, is there anything I can do? I have AMNVOLT V3 ATS MINI. I probably need to put some capacitors in parallel somewhere. Does anyone know exactly where?

[radiola2]

You can change C25 and C26 to bigger values to get more bass. There are two discussion threads that can be of interest for this question:
#83

and

#173

C20 is mentioned in #83 but that capacitor only affects the internal speaker.

[EmEiBee]

... sure, not really 😂

EDIT say:
Give me a little time; I have an idea. It's not high-end, but it could be the best possible solution with the existing hardware.
I first need to study the datasheets of the circuits I'm using to see if my idea is feasible. But one thing is already clear:
If it is, it'll involve a bit more soldering than just two capacitors...

[remussatala]

Of course, there are also more complex possibilities that may include a firmware update to add a new graphic equalizer option for the sound. Is that what you want to consider? 🙂

[EmEiBee]

Nonsense. How's that supposed to help? The ESP has no connection to the audio and is solely responsible for controlling the 4732 and the UI.
Besides, I was talking about hardware. Since the ESP, as mentioned, has nothing to do with the audio signal, an improvement here is only conceivable through hardware modifications.

[remussatala]

Ok, but the sound is obviously very unbalanced, and the bass is completely cut off. I correctly suspected, however, that it must be some capacitors, and all I wanted was to find out exactly which ones were those capacitors.🙂

[EmEiBee]

Scroll up to the top of this thread. Radiola2 has already pointed out the corresponding capacitors (C25/C26). A look at the circuit diagram will show you the same. C20 is not relevant for you, as it only serves the internal amplifier.
If that's not enough for you, you can also install a low-pass filter there to boost the bass in relation to the treble, or a low-Q band-stop filter to attenuate the midrange.
Both will, however, reduce the maximum volume.
Ultimately, your headphones are powered directly by the 4732's outputs. The 4732's output stage is rudimentary and unsuitable as a direct power source for high bass, as it simply cannot provide the required current. The lower the impedance of your headphones and the lower the efficiency, the less bass you will perceive.