Wireless Audio Transmitter
From Amazon
BOSS Wl-30Xlr Wireless Microphone System | Premium Battery Powered Receiver And Transmitter for Ultra-Low Latency Wireless Audio, Up-To 230 Feet
GAK
Boss WL-30XLR Wireless System
Inta Audio
BOSS WL-30XLR - Plug-and-Play Wireless Microphone System