15. PEQ settings about QX13

What is PEQ?

PEQ (Parametric Equalizer) is an equalizer that allows detailed adjustment of multiple parameters, including frequency bands (e.g., low, mid-low, mid-high, high), frequency points (sweepable, freely selectable), gain (boost/cut), and Q factor (bandwidth, adjustable or selectable high/low Q). It is generally used for subjective sound adjustments, making the music style more distinct and colorful, and achieving the desired listening effect.

What is the difference between PEQ and a regular EQ?

With PEQ, you can freely customize the center frequency, amplitude, and Q factor. In contrast, a regular EQ allows you to adjust amplitude only, while the frequencies and Q values are fixed by the system. Simply put, PEQ is fully customizable, while a standard EQ is system-defined. Because regular EQ presets are fixed and limited in variety, many users find that none of them fully meet their expectations. With the introduction of customizable PEQ, this issue is resolved, providing users with far greater flexibility.

How to use PEQ on the QX13

On Mobile phone (Android only)

Connect the QX13 to your phone via a USB cable. Open the FIIO Control app, tap “+” in the top-right corner of My Products to find and connect the QX13. Tap the Equalizer option to configure PEQ.

On PC (Web browser)

Connect the QX13 to your computer via a USB cable. Open the provided web interface: Click to enter. In the top-left corner, click Search Device, select QX13, and then configure PEQ.

The PEQ configuration on the QX13 can be set and saved either through the FIIO Control app (Android) or the web interface. For usage instructions: Click to view.

Note: PEQ takes effect in both UAC 2.0 / UAC 1.0 modes and coaxial output mode.