Yes, if it is routed to BUS EFFECT. By default, MIX IN audio is sent to BUS A or BUS B, where effects are not applied. For how to switch the output bus, see "Switching between buses for sending sound" in the P-6 Owner's Manual.
Yes, if it is routed to BUS EFFECT. By default, MIX IN audio is sent to BUS A or BUS B, where effects are not applied. For how to switch the output bus, see "Switching between buses for sending sound" in the P-6 Owner's Manual.