Browse and manage favourite tones, control your amp, jam to video backing tracks, learn chords and scales.

Supported Amps:

  • Positive Grid Spark 40
  • Positive Grid Spark Mini

Web Version

Try out the web version using Google Chrome, MS Edge or other web browsers which support Web Bluetooth. Firefox and Safari do not support Web Bluetooth and are not compatible. For Windows and macOS you need a 64-bit OS.

Open Web App ▶

Note: This software enables some experimental FX not supported by the official Spark app. Storing presets to the amp with unsupported FX may stop the official PG Spark app working until you replace the preset on the amp.

Screenshot of Soundshed App

Desktop version for (64-bit) Windows, macOS and Linux

This free software installs as an app on your computer and is an alternative if the web version doesn't work for you. Download the version for your operating system:

Other features

Backing Tracks

Search, play and favourite backing tracks, use the in-app player while using the other app features. Screenshot of Soundshed App

Scales and Chords

Learn scales, arpeggios and chords in any key for a wide range of fretted instrument and tunings. Screenshot of Scalex


Your system must have Bluetooth (BLE) support and be able to pair with the amp. Your system must be able to run the latest version of Google Chrome or MS Edge.

Get Involved

To discuss the app features and share ideas, visit the community discussion on GitHub.

You can also check out the code and suggest changes:

Spark 40 and Positive Grid are trademarks of Positive Grid Limited - Soundshed is not affiliated with or endorsed by Positive Grid.

Image Credits: Burning Guitar Photo by Dark Rider on Unsplash