WL-30XLR: The sound from mics used by another wireless system is heard on this system. January 18, 2021 09:06 Updated Follow The wireless signals might be getting scrambled. Try selecting a different channel. Related articles WAZA-AIR: When I play my guitar with the transmitter plugged in, sound is not heard from the WAZA-AIR. WL-30XLR: What kind of microphone can I connect? WAZA-AIR: What kind of guitars can the transmitter (WL-T) be used with?