USB Audio Playback with Spark PEDAL – Help Center

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When Spark PEDAL is connected to your computer as a USB audio device, adjusting the physical Main Knob will not change per-app playback volume. Instead, adjust playback volume from the computer - either per-app or through the OS volume mixer.

Set Up Spark PEDAL as USB Audio

Connect Spark PEDAL to your computer using the included USB-C cable.
Turn on Spark PEDAL.
On your computer, select Spark PEDAL USB Audio as the playback device.

For full USB setup details (including recording), see USB Recording.

Spark PEDAL has no dedicated USB audio volume knob. The Main Knob (in FX Mode) controls the overall amp output, not per-app playback volume.

Adjust Playback Volume on the Computer

macOS

Use the built-in volume control from the application itself (e.g. YouTube, Spotify, Apple Music).

Windows

Open Settings → System → Sound.
Under Advanced, click Volume mixer.
In the Apps list, adjust the volume slider for each app individually (e.g. Chrome, Spotify, Media Player).

In the Volume Mixer, the top Volume slider controls system sounds. Adjust it separately from your app sliders.