680-watt, portable PA system with 10-channel powered mixer, two 10" speakers, iPod/iPhone USB connection, a new Bluetooth® wireless audio streaming function, SPX digital reverbs, an onboard feedback suppressor and versatile EQ.

-680W (340W 340W) power output
-Newly designed high quality speakers (LF:10" woofer/ HF:1.4" voice coil compression driver)
-Detachable 10-channel mixer (4 mono/line 6 mono / 3 stereo line)
-iPod/ iPhone USB connection
-Wireless Bluetooth Connectivity
-1-Knob Master EQ™ with virtual bass boost
-High resolution SPX digital reverbs (4 types, parameter control)
-Onboard feedback suppressor
-Great-sounding 3-band channel EQ
-Switchable stereo/ mono inputs
-Hi-Z (high impedance) inputs
-Phantom power
-Monitor and Subwoofer outputs
-Optional reverb footswitch

More Info From Yamaha: https://ca.yamaha.com/en/products/proaudio/pa_systems/stagepas_400bt_600bt/index.html