Not directly, each string on the SubPro can only be routed to one output at a time. But you can split or duplicate the signal externally.

Here are some ways:

• Use pedals with buffered bypass or always-on outputs (for example, tuner pedals that maintain signal even when off) to split the signal.
• Use pedals that have a dry/wet mix control so you can keep some “dry” string(s) along with the affected signal.
• Use a small mixer or line selector pedal (e.g. Boss LS-2) to combine or blend signals.

For more advanced routing, pedals like OBNE’s Signal Blender Stereo work well: you can split one input into multiple outputs, or combine multiple signals into one, depending on the model. This gives you flexibility: you could send the SubPro-processed signal through one path (e.g. for sub octave effects) and keep a clean or blended path to your amp or another effect chain.