Bose 869721-0010 XLR Wireless Mic Transmitter S1 Pro+

The Bose 869721-0010 XLR Wireless Mic/Line Transmitter is a purpose-built accessory for the Bose S1 Pro+ portable PA system. It accepts any XLR source — dynamic microphones, condenser mics, or line-level outputs from mixers — and transmits audio wirelessly to the S1 Pro+ via a 2.4 GHz RF signal. This eliminates the need for cable runs between your source and speaker, which simplifies stage setups and reduces tripping hazards. The transmitter pairs automatically with the wireless RF receiver built into the S1 Pro+, so there is no manual frequency scanning or channel selection involved.

Portability is central to the design. The transmitter is compact enough to store inside the S1 Pro+ speaker itself, where it charges between uses — no separate charging dock or cable required. Onboard controls are limited to a straightforward power switch, keeping operation simple during performances. With up to 4 hours of battery life and a 30-foot wireless range, the transmitter is well suited for solo performers, presenters, and small-venue musicians who want a clean, cable-free connection to their S1 Pro+ system without investing in a full multichannel wireless rig.