# 2-way Associative ABS Volume

Qudelix's unique 2-way Associative Absolute Volume ensures optimal audio quality at all volume levels.

* **Smartphone, PC/Laptop volume control**
  * 2dB Step
* **5K Device Volume Control (5K Red Buttons)**
  * 0.5dB Step

{% hint style="info" %}
Whether you adjust the volume on the source device or the 5K, optimal audio quality is consistently maintained. Users can adjust the volume from whichever device is most convenient.
{% endhint %}

***

> **How to Verify ABS Volume Functionality**
>
> When you adjust the volume on a smartphone or PC, the smartphone or PC sends a volume command to the 5K. The 5K is programmed to blink its Blue LED whenever it receives these volume adjustment commands from the source device. If the Blue LED blinks when you adjust the source volume, it indicates that the ABS Volume functions correctly.


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