Yes, the effects of the P-6 also apply to the audio input through the MIX IN jack. For details, please refer to the "Switching between buses for sending sound" and "Signal Flow" sections in the P-6 Owner's Manual.
Yes, the effects of the P-6 also apply to the audio input through the MIX IN jack. For details, please refer to the "Switching between buses for sending sound" and "Signal Flow" sections in the P-6 Owner's Manual.