20-Band PEQ/GEQ (64-bit double precision)
The embedded pro-grade equalizer is a vital benefit of 5K DAC/AMP over other similar products. It processes every incoming audio from everywhere: Youtube, Apple Music, Spotify, iOS, Android, PC, Bluetooth(all Codecs), and USB.
5K DAC/AMP supports parametric EQ and graphical EQ. The embedded DSP cores perform double-precision 64-bit EQ processing, providing the most accurate and precise frequency response even at low-frequency range.
5K manages and stores the EQ presets in its internal flash memory. And 5K automatically reloads the settings at boot-up and resumes the same EQ setting as configured before. So, once you configure the EQ using the app, you no longer need to launch the app to see if the EQ runs or not.
Tapping the EQ Graph pane will toggle the EQ control panel.
- Filter setting window
- Preset list window
Long Press(iOS/Android) or Double-click(Chrome) custom#1~#20 will show you the popup window saving the preset.
10-Band L/R Independent PEQ/GEQ
To fine-tune the channel imbalance, you can use 10-Band L/R Independent EQ mode instead of 20-band.
EQ Headroom & Pre Gain
When an EQ filter gain higher than 0dB, the filter boosts up the input audio, and the audio may get clipped/saturated, resulting in unwanted clipping noise. So, we must scale down the input audio before EQ filters, making the frequency peak of an EQ preset no higher than 0dB.
The Preamp Gain and Headroom are the scale factors applied to the input before EQ filtering.
Scale factor [dB] = Preamp Gain [dB] + Headroom [dB]
The EQ headroom is a global factor applied to all EQ presets. And the EQ frequency plot, min/max display, does not reflect the headroom. In other words, the headroom would change the audio output level but not the frequency plot visually. Meanwhile, the Preamp Gain works for each EQ preset. And it visually changes the EQ frequency plot and the audio output level.
Saving EQ presets
Long Press(iOS/Android) or Double-click(Chrome) custom#1~#20 will show you the popup window for saving the preset.
When you save an EQ preset, you can save the impedance and sensitivity profile along with the EQ preset. Technically, EQ and Impedance/Sensitivity have nothing to do with each other. However, since most users manage their EQ preset per IEM/Headphone basis, we added the impedance/sensitivity fields in each EQ preset. We highly recommend setting Impedance/Sensitivity, but you can leave them as zeros.
AutoEq is an open-source project. Please refer to the link below for more information.
The Qudelix app helps users to load and apply eq presets from the AutoEq project. The app fetches the AutoEq project data and shows them to users.