Leave the cables in your case and simplify your set up with a wireless RF transmitter for your microphone or other line-level sources like a mixer. It pairs effortlessly with the wireless RF receiver integrated into the S1 Pro+ and uses a 2.4 GHz frequency for reliable wireless connection up to 30 feet. It features onboard controls for on/off and provides up to 4 hours of battery life. When not in use, the transmitter stores neatly inside the speaker to charge. | Bose | | XLR Wireless Mic/Line Transmitter for S1 Pro+ PA System | Black | Best Buy