Adjust the signal chain between Input 1 & Input 2 – Help Center

The corresponding option will appear in the Spark app when you connect an acoustic guitar, bass, or vocal microphone to Input 2.

To adjust the signal chain between Input 1 & 2, simply tap the "IN1" or "IN2" button next to the preset name to switch between them.

IN 1 & 2.gif

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 use effect pedals and preamps made specifically for acoustic, bass, and vocal.