Android app for controlling the DSP

Damn Audio BTLINK is equipped with 24-bit Kalimba digital signal processor (DSP) which performs signal processing functions on over-air data or codec data to enhance audio, that lets you to upgrade the sound quality of your factory vehicle audio system.

When used with GAIA Control mobile app, all settings can be done easily from your smartphone’s touchscreen.

Downloading the app

The Android app can be downloaded directly from here.

Installing the app

In order to install this app, you’ll have to allow to install unknown apps.

For Android 8 and above

  1. Go to your phone’s Settings
  2. Go to Security & privacy > More settings
  3. Tap on Install apps from external sources
  4. Select the browser (e.g. Chrome or Firefox) you want to download the Android app from.
  5. Toggle Allow app installs ON.

For versions earlier than Android 8

  1. Go to your phone’s Settings
  2. Tap Security
  3. Under Device administration, toggle Unknown sources ON

Important: Do not download the GAIA Control APK from any third-party source other than as those files have likely been tampered with.

Launching the app

When launching the app for the first time, you’ll be prompted to allow the app to access your device’s location and files. Tap on Allow all the time or Allow to do it.

Connecting the BTLINK

In order to connect the BTLINK via GAIA Control you first have to turn on Bluetooth on your Android device and pair it to your BTLINK, then do the following in the app:

  1. Select the Bonded tab
  2. Select the checkbox to Damn Audio BTLINK
  3. Press Connect BR/EDR
  4. Top right-hand side should show Damn Audio BTLINK connected - bonded

Configuring the Equalizer

General settings

Bass boost - increases low frequencies in range between 20 Hz and 250 Hz by 6 dB. Do not use this setting together with Bank 2 preset.

3D - this setting is for headphone applications only, so better keep it turned off

Available presets

  • Bank 0 - Flat
  • Bank 1 - Flat (configurable)
  • Bank 2 - Bass boost (should not be used together with the Bass boost in the General settings)
  • Bank 3 - Treble boost
  • Bank 4 - Rock
  • Bank 5 - Jazz
Bank 2 - Bass boost
Bank 3 - Treble boost
Bank 4 - Rock
Bank 5 - Jazz

Parametric equalizer

Master Gain

If you feel the volume is too low, you can always increase the Master Gain. Have in mind that increasing the gain may cause the distortion. We do not recommend increasing the Master Gain more than 3 - 3.5 dB.

Important: in some cars such as Alfa Romeo Giulietta this setting should be always set to 0 dB or even less (depending on the source of the audio), otherwise this will definitely cause the distortion.


If you’re not satisfied with the available presets, you can configure Bank 1 preset manually. In total, up to 5 different frequency bands could be configured.

Every band has three controls. The first determines what specific frequencies you want to boost or cut: you zero in on a frequency somewhere between 20 Hz and 20,000 Hz, which you can then boost or decrease. The second, which is sometimes called the Q, determines the sharpness of the bandwidth (meaning “are you zeroing in tightly on one specific frequency, or are you targeting a wider bandwidth surrounding that frequency?”). And the third is the level control—by how much do you want to boost or reduce a frequency? We do recommend to use between 0.7 and 1 for Q setting and no more than 6 dB for G setting.

Filter type - use either PEQ (Parametric Equalizer) or Bypass the band. Other available filter types should never be used, since we don’t want to cut off any of the frequencies.