The Yorkville Sound Excursion EXM400 Compact PA is a 400 watt, four channel Bluetooth enabled active stereo system built with mobile live sound in mind. Lightweight compact extension speakers, innovative pole-through connectivity and versatile input / mixer functions ensure the EXM400 can easily be used in small solo or duo performances, DJ applications, conferencing and public address functions. Designed for maximum mobility, the center of the EXM400 is a compact powered subwoofer module with integrated mixer. Two high efficiency satellite speakers and two speaker poles complete the core package. Connectivity between subwoofer / mixer and satellite speakers is handled with innovative pole through conductors, meaning no extra cabling is required.