Switch between two inputs while switching outputs at the same time and have your pedalboard in between at all times on either input or either output.
Example:
Electric guitar into A and amp for electric into A
Acoustic into B and amp or DI for acoustic into B
When A is on, electric guitar will be on and routed through your pedalboard and then on to the amp.
When B is on, acoustic will be on and routed through your pedalboard and then on to your acoustic amp or DI.
DIMENSIONS: 4.37" X 2.37" X 1.1"