Can the Spark app's signal chain be applied to all inputs on the Spark EDGE? – Help Center

Only Input Channels 1 and 2 are compatible with the signal chain in the Spark app and can deliver built-in effects.

Input Channels 3 and 4 do not support built-in effects from the Spark app.

For Input Channel 1, the Spark app can fully control and save the entire signal chain.

For Input Channel 2, the Spark app can manage certain aspects of the signal chain. Additionally, you can add preamps and effect pedals specifically designed for acoustic guitar, bass, and microphone.

You can save effect pedals and preamps for acoustic, bass, and vocal on both Input Channel 1 and Input Channel 2 on the Spark EDGE. However, Input Channel 2 can only load effect pedals and preamps specifically designed for acoustic, bass, and vocal.