BOSE Wireless Microphone Transmitter for S1 Pro+ Get to singing FASTER on your S1 Pro+ with the BOSE Wireless Microphone Transmitter. Leave the cables in your case and simplify setup when you add this wireless RF transmitter for your mic. It’s a standard XLR connection, so just plug it in and the accessory pairs effortlessly to the S1 Pro+ Wireless PA System. Your show. Now wireless! The 2.4 GHz frequency gives a reliable wireless connection up to 30 feet, letting you freely engage with the crowd. Plus, the transmitter features onboard controls for on/off and mute. Can’t stop, won’t stop the music. The transmitter plays for up to 4 hours. Between shows, store it in the S1 Pro+ itself. It charges on the go, so you’re always ready for the next show.