> For the complete documentation index, see [llms.txt](https://qudelix.gitbook.io/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://qudelix.gitbook.io/home/5k/equalizer/20-band-eq.md).

# 20 Band EQ

Qudelix-5K supports a 20-band EQ. You can choose between a 20-band Parametric EQ or Graphic EQ.

### Graphical EQ

In Graphic EQ, you can adjust the GAIN based on 20 fixed frequency bands (Fc).

<figure><img src="https://3332347321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6eUmiJ4Hi4Cv2aUhWNRV%2Fuploads%2FrmV0jkQLdRK4C7JY48yw%2Fimage.png?alt=media&amp;token=7cb7d4ca-8e86-4ff5-bf0e-cb66fb05dee1" alt=""><figcaption><p>20-Band Graphical EQ</p></figcaption></figure>

### Parametric EQ

In Parametric EQ, you can adjust the Fc, Q, Gain, and Type of the filter.

<figure><img src="https://3332347321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6eUmiJ4Hi4Cv2aUhWNRV%2Fuploads%2FY9vxhUo8cit4GniFUh24%2Fimage.png?alt=media&amp;token=adaffef2-0815-44fe-a7c6-312d54069566" alt=""><figcaption><p> 20-Band Parametric EQ</p></figcaption></figure>

{% hint style="info" %}
When an AutoEq preset is selected, it automatically switches to Parametric EQ.
{% endhint %}

### Preset Save

To save a preset, double-click a "Custom #X" in the preset list at the top right corner of the screen. It will save the current EQ preset.

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