How do I use the rear Input Selector switch on Iridium?

On the back of the Iridium chassis, you will find the Audio Routing selector which selects the input audio routing for the pedal.

• mono: Use when connecting a mono signal source, such as a guitar, into Iridium’s IN jack.  Output in this mode is stereo.  Use OUT L for mono output.
• stereo: Use when connecting a TRS stereo input signal to Iridium’s IN jack.  Output is stereo.
• sum: Use when connecting a TRS stereo input signal that you would like to sum to mono.  Both OUT L and OUT R will provide a summed mono output signal.